KEY FEATURES – Enhanced night vision polarized eye-glasses – Various Style - Reduced glare and eye strain - Lightweight, durable, & comfortable frames - Ideal for night driving, fishing, shooting, hunting, computer work, or any low light conditions | ENHANCED NIGHT VISION – KastKing yellow lenses increase visual clarity and depth perception for improved night and low light vision, rainy or foggy conditions. KastKing 1.0mm lenses are 35% thicker than standard eyewear for greater protection | REDUCED GLARE & EYE STRAIN– KastKing Polarized lenses help reduce glare caused by reflected light to improve vision and comfort. KastKing yellow lenses also block blue light that helps reduces eye fatigue and eye strain | SUPERIOR FRAMES – Made of Grilamid material commonly used by the military and in medical applications, KastKing frames are lightweight, extremely flexible, and heat and UV resistant. The ultra-lightweight material offers a very comfortable fit | PROTECT YOUR EYEWEAR – KastKing includes a molded custom hard case for storage and a custom Prym1 Camo microfiber pouch which can be used for cleaning as well as storing your sunglasses. To avoid lens scratches and lens coating damage, clean your lenses with a clean microfiber cloth or lint free cloths and fresh warm water. Never dip them in saltwater or dry with a paper towel.