The wrap-style, half-frame design of these sunglasses includes an adjustable nose bridge and rubber bow tips for maximum comfort and minimum frame slip while active. Polarized polycarbonate lenses reduce glare, enhance contrast, and block both UVA and UVB light. Frame is lightweight, flexible, and durable Grilamid TR90 injection-molded plastic. Blue and Black frames have gray tint lenses; Matte Brown frame has brown tint lenses.