The I.K. 91 are ultra-lightweight (34 grams) and very comfortable goggles. It's designed to protect against wind, dust, dirt, mud, and more. The tinted spherical lenses give you a great distortion-free view with totally unobstructed peripheral vision. The narrow headband fits well under or over helmets. All I.K. 91 Lenses are 100% UV blocking and impact resistant. These goggles come with their own microfiber carrying case.