The OutdoorMaster Promise: 100% Satisfaction Guarantee. | Stretchy Bungee Dog Leash that Reduces Risk of Injury and Increases Comfort. | Soft Padded Handle for Ultimate Comfort. Handy Quick Release and Connect Buckle. | Length: 36.5 inches (contracted) - 48 inches (stretched) | What You Get: OutdoorMaster Bungee Dog Leash, our customer-favorite 6-month warranty and friendly customer service.

OTG (OVER-THE-GLASSES) DESIGN - Ski goggles that fits over glasses. Suitable for both ADULTS AND YOUTH. | ANTI-FOG LENS & EXCELLENT OPTICAL CLARITY - Dual-layer lens technology with anti-fog coated inner lens gives you a FOG-FREE SKI EXPERIENCE. | SAFE & RELIABLE WITH UV PROTECTION - Soft TPU frame with lenses that provide 100% UV400 protection and YEARS OF RELIABLE USE. | UNIVERSAL HELMET COMPATIBILITY - Extra long elastic strap ensures great helmet compatibility with all helmets. Suitable for both adults & teens. | WHAT YOU GET: 1 x OutdoorMaster OTG Ski Goggles, 1 x Carrying Pouch, CUSTOMER-FAVORITE 1 YEAR WARRANTY and friendly customer service.

OTG (OVER-THE-GLASSES) DESIGN - Ski goggles that fits over glasses. Suitable for both ADULTS AND YOUTH. | ANTI-FOG LENS & EXCELLENT OPTICAL CLARITY - Dual-layer lens technology with anti-fog coated inner lens gives you a FOG-FREE SKI EXPERIENCE. | SAFE & RELIABLE WITH UV PROTECTION - Soft TPU frame with lenses that provide 100% UV400 protection and YEARS OF RELIABLE USE. | UNIVERSAL HELMET COMPATIBILITY - Extra long elastic strap ensures great helmet compatibility with all helmets. Suitable for both adults & teens. | WHAT YOU GET: 1 x OutdoorMaster OTG Ski Goggles, 1 x Carrying Pouch, CUSTOMER-FAVORITE 1 YEAR WARRANTY and friendly customer service.

OTG (OVER-THE-GLASSES) DESIGN - Ski goggles that fits over glasses. Suitable for both ADULTS AND YOUTH. | ANTI-FOG LENS & EXCELLENT OPTICAL CLARITY - Dual-layer lens technology with anti-fog coated inner lens gives you a FOG-FREE SKI EXPERIENCE. | SAFE & RELIABLE WITH UV PROTECTION - Soft TPU frame with lenses that provide 100% UV400 protection and YEARS OF RELIABLE USE. | UNIVERSAL HELMET COMPATIBILITY - Extra long elastic strap ensures great helmet compatibility with all helmets. Suitable for both adults & teens. | WHAT YOU GET: 1 x OutdoorMaster OTG Ski Goggles, 1 x Carrying Pouch, CUSTOMER-FAVORITE LIFETIME WARRANTY and friendly customer service.

OTG (OVER-THE-GLASSES) DESIGN - Ski goggles that fits over glasses. Suitable for both ADULTS AND YOUTH. | ANTI-FOG LENS & EXCELLENT OPTICAL CLARITY - Dual-layer lens technology with anti-fog coated inner lens gives you a FOG-FREE SKI EXPERIENCE. | SAFE & RELIABLE WITH UV PROTECTION - Soft TPU frame with lenses that provide 100% UV400 protection and YEARS OF RELIABLE USE. | UNIVERSAL HELMET COMPATIBILITY - Extra long elastic strap ensures great helmet compatibility with all helmets. Suitable for both adults & teens. | WHAT YOU GET: 1 x OutdoorMaster OTG Ski Goggles, 1 x Carrying Pouch, CUSTOMER-FAVORITE LIFETIME WARRANTY and friendly customer service.

OTG (OVER-THE-GLASSES) DESIGN - Ski goggles that fits over glasses. Suitable for both ADULTS AND YOUTH. | ANTI-FOG LENS & EXCELLENT OPTICAL CLARITY - Dual-layer lens technology with anti-fog coated inner lens gives you a FOG-FREE SKI EXPERIENCE. | SAFE & RELIABLE WITH UV PROTECTION - Soft TPU frame with lenses that provide 100% UV400 protection and YEARS OF RELIABLE USE. | UNIVERSAL HELMET COMPATIBILITY - Extra long elastic strap ensures great helmet compatibility with all helmets. Suitable for both adults & teens. | WHAT YOU GET: 1 x OutdoorMaster OTG Ski Goggles, 1 x Carrying Pouch, CUSTOMER-FAVORITE LIFETIME WARRANTY and friendly customer service.

OTG (OVER-THE-GLASSES) DESIGN - Ski goggles that fits over glasses. Suitable for both ADULTS AND YOUTH. | ANTI-FOG LENS & EXCELLENT OPTICAL CLARITY - Dual-layer lens technology with anti-fog coated inner lens gives you a FOG-FREE SKI EXPERIENCE. | SAFE & RELIABLE WITH UV PROTECTION - Soft TPU frame with lenses that provide 100% UV400 protection and YEARS OF RELIABLE USE. | UNIVERSAL HELMET COMPATIBILITY - Extra long elastic strap ensures great helmet compatibility with all helmets. Suitable for both adults & teens. | WHAT YOU GET: 1 x OutdoorMaster OTG Ski Goggles, 1 x Carrying Pouch, CUSTOMER-FAVORITE LIFETIME WARRANTY and friendly customer service.

ASTM & CPSC CERTIFIED SAFETY - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Venlitation System and Dual Safety Certifications helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | WHAT YOU GET - OutdoorMaster Skateboard & Cycling Helmet, extra removable liner & our CUSTOMER-FAVORITE LIFETIME WARRANTY and friendly customer service.

ASTM & CPSC CERTIFIED SAFETY - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Venlitation System and Dual Safety Certifications helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | WHAT YOU GET - OutdoorMaster Skateboard & Cycling Helmet, extra removable liner & our CUSTOMER-FAVORITE LIFETIME WARRANTY and friendly customer service.

ASTM & CPSC CERTIFIED SAFETY - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Venlitation System and Dual Safety Certifications helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | WHAT YOU GET - OutdoorMaster Skateboard & Cycling Helmet, extra removable liner & our CUSTOMER-FAVORITE LIFETIME WARRANTY and friendly customer service.

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Venlitation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached

COMFORTABLE SAFETY - Ski helmet built for both comfort and safety. Equipped with REINFORCED ABS SHELL & SHOCK-ABSORBING EPS CORE. | CHOOSE BETWEEN 13 DIFFERENT COLOR OPTIONS - Sleek design available in 13 different color combinations for you to choose from. All in matte finish. | ADJUSTABLE SIZE - Size adjustment dial for a perfect fit. EASY TO WASH removable ear pads & inner fleece liner. | BEST-IN-CLASS VENTILATION - Equipped with 14 individual vents for next-level ventilation for HOURS OF COMFORTABLE SKIING. | WHAT YOU GET - 1 x OutdoorMaster Ski Helmet, OutdoorMaster's friendly customer service.

COMFORTABLE SAFETY - Ski helmet built for both comfort and safety. Equipped with REINFORCED ABS SHELL & SHOCK-ABSORBING EPS CORE. | CHOOSE BETWEEN 22 DIFFERENT COLOR OPTIONS - Sleek design available in 22 different color combinations for you to choose from. All in matte finish. | ADJUSTABLE SIZE - Size adjustment dial for a perfect fit. EASY TO WASH removable ear pads & inner fleece liner. | BEST-IN-CLASS VENTILATION - Equipped with 14 individual vents for next-level ventilation for HOURS OF COMFORTABLE SKIING. | WHAT YOU GET - 1 x OutdoorMaster Ski Helmet, OutdoorMaster's friendly customer service. | About Size: The helmet contains an inner cushion, so the size number may be a little smaller. The helmet runs a size small. Please order a size based on measuring head circumference + 2 cm.

About Size: The helmet contains an inner cushion, so the size number may be a little smaller. The helmet runs a size small. Please order a size based on measuring head circumference + 2 cm.

COMFORTABLE SAFETY - Ski helmet built for both comfort and safety. Equipped with REINFORCED ABS SHELL & SHOCK-ABSORBING EPS CORE. | CHOOSE BETWEEN 13 DIFFERENT COLOR OPTIONS - Sleek design available in 13 different color combinations for you to choose from. All in matte finish. | ADJUSTABLE SIZE - Size adjustment dial for a perfect fit. EASY TO WASH removable ear pads & inner fleece liner. | BEST-IN-CLASS VENTILATION - Equipped with 14 individual vents for next-level ventilation for HOURS OF COMFORTABLE SKIING. | WHAT YOU GET - 1 x OutdoorMaster Ski Helmet, OutdoorMaster's friendly customer service.

Durable: Built for both comfort and impact resistance with reinforced ABS shell & thickened shock-absorbing EPS core | Extra Removable Lining: Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away | A Helmet for Multi-Sport: Smooth Ventilation System helps to protect and enjoy skating, cycling, BMX, MTB and etc | Double Adjustment: Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maximize the best fit and comfortable wearing | How to Measure A Proper Helmet: To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8 inch (54 cm-58 cm). The recommended Age Grading: 5 Years and Older

Brand: OutdoorMaster | Outer Material: Acrylonitrile Butadiene Styrene (ABS) | Special feature: Ventilation

Durable: Built for both comfort and impact resistance with reinforced ABS shell & thickened shock-absorbing EPS core | Extra Removable Lining: Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away | A Helmet for Multi-Sport: Smooth Ventilation System helps to protect and enjoy skating, cycling, BMX, MTB and etc | Double Adjustment: Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maximize the best fit and comfortable wearing | How to Measure A Proper Helmet: To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8 inch (54 cm-58 cm). The recommended Age Grading: 5 Years and Older

Brand: OutdoorMaster | Outer Material: Acrylonitrile Butadiene Styrene (ABS) | Special feature: Ventilation

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head-about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.25-23.62inch (54cm-60cm).

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head-about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.25-23.62inch (54cm-60cm).

SAFETY TRUSTWORTHY - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Venlitation System and Dual Safety Certifications helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | WHAT YOU GET - OutdoorMaster Skateboard & Cycling Helmet, extra removable liner & our CUSTOMER-FAVORITE customer service.

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head¡bout one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8inch (54cm-58cm).

SAFETY TRUSTWORTHY - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Venlitation System and Dual Safety Certifications helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | WHAT YOU GET - OutdoorMaster Skateboard & Cycling Helmet, extra removable liner & our CUSTOMER-FAVORITE customer service.

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head-about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8inch (54cm-58cm).

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head¡bout one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8inch (54cm-58cm).

Durable: Built for both comfort and impact resistance with reinforced ABS shell & thickened shock-absorbing EPS core | Extra Removable Lining: Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away | A Helmet for Multi-Sport: Smooth Ventilation System helps to protect and enjoy skating, cycling, BMX, MTB and etc | Double Adjustment: Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maximize the best fit and comfortable wearing | How to Measure A Proper Helmet: To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8 inch (54 cm-58 cm). The recommended Age Grading: 5 Years and Older

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head-about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.25-23.62inch (54cm-60cm).

SAFETY TRUSTWORTHY - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Venlitation System and Dual Safety Certifications helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | WHAT YOU GET - OutdoorMaster Skateboard & Cycling Helmet, extra removable liner & our CUSTOMER-FAVORITE customer service.

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head¡bout one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8inch (54cm-58cm).

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head¡bout one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8inch (54cm-58cm).

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head-about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8inch (54cm-58cm).

Durable: Built for both comfort and impact resistance with reinforced ABS shell & thickened shock-absorbing EPS core | Extra Removable Lining: Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away | A Helmet for Multi-Sport: Smooth Ventilation System helps to protect and enjoy skating, cycling, BMX, MTB and etc | Double Adjustment: Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maximize the best fit and comfortable wearing | How to Measure A Proper Helmet: To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.3-22.8 inch (54 cm-58 cm). The recommended Age Grading: 5 Years and Older

DURABLE - Built for both comfort and impact resistance with REINFORCED ABS SHELL & THICKENED SHOCK-ABSORBING EPS CORE. | EXTRA REMOVABLE LINING - Skateboard helmet with two removable liner for different head sizes and easy to wash the sweat away. | A HELMET for MULTI-SPORT - Smooth Ventilation System helps to protect and enjoy SKATING, CYCLING, BMX, MTB and etc. | DOUBLE ADJUSTMENT - Well-attached & long-lasting adjustment dial and skin-friendly adjustable chin strap maxmize the best fit and comfortable wearing. | HOW TO MEASURE A PROPER HELMET? - To find the right size bike helmet, start by measuring your head circumference, wrap a flexible tape measure around the largest portion of your head-about one inch above your eyebrows. Or, wrap a string around your head, then measure the length of string with a yardstick. Size Large is recommended if your size is between 21.25-23.62inch (54cm-60cm).