Starting a wonderful day from walking your dog in the morning and ends an enrich day by walking your dog in the evening. Yes, this is life, enjoy your life! Domi LED Dog Harness Helps Your dog Live A Happier Life Under Your Accompany.?? Specification Of Domi No Pull Dog Harness: * Cool Looking With 4 Available Colors -- Blue, Green, Rose red, Red. * Glowing in the Dark With 2 Flashing Modes -- Fast flashing, Steady glowing. * Easy Walk Dog Harness* Stops Pulling * Adjustable Dog Harness --- Adjustable belt buckles & velcro make a good fit for your dogs * Easy to Put On and Off * Breathable and Comfortable Padding * USB Rechargeable -- Charging 2 hours could last for 6-8 hours for blink model or 3-4 hours steady glow. Light Up Dog Harness Size: S = Base of Neck [13.5"-18"]; Chest Girth [18"- 26"] ??Dog Harnesses for Small DogsM= Base of Neck[16.5"-22.5"]; Chest Girth [ 22.5"-32.5"] ??Dog Harness Medium L = Base of Neck[20.5"-28.5"]; Chest Girth [28.5"-42.5"] ??Dog Harness for Large Dogs Package include: 1 * Dog Vest Harness1 * Micro USB Rechargeable Cable How do I know which size is right for my doggie? Please measure your dog's neck and chest girth, then check the size chart from the photo to choose the right size for your doggie (Not only according the dog weight to choose the size) Dose it waterproof or not? This reflective dog vest could work in wet grass or lightly rain, but it is not recommended for swimming or full submersion. Warning:?? Choking hazard small parts, not for children under 3 years old. Charging with 5V USB adapter only.Fast charge adapter may cause serious damage.