Designed specifically to fit teenagers, the Rush Computer Glasses from GUNNAR are designed to reduce eyestrain when using digital screens. The light, durable, tortoise-colored nylon frames feature a stylishly rounded design. The anti-glare and smudge resistant clear tinted natural-focus lenses block up to 35% of blue light emissions from monitors, tablets, phones, and more to help keep your eyes feeling refreshed and sharp. They also block 100% of UV rays, so your eyes are protected both indoors and out. A convenient glasses hard case and microfiber cleaning cloth are included. These glasses are not prescription-based.