The I.K. 91 is an ultra lightweight and very comfortable goggle. The multilayer foam sinks into your face like a soft pillow making it very easy to wear for long periods of time. The spherical lens gives you a great distortion free view with totally unobstructed peripheral vision. The mirrored lens color is a gradient red to provide sun protection from above while still allowing you to see the ground clearly below The narrow headband easily fits over or under your helmet. All IK91 Lenses are 100% UV blocking and impact resistant. This goggle comes with its own nylon carrying case.