The KLR PURE Lens System is composed of virgin optical-grade GE
polycarbonate--inherently UVA \ UVB and IR shielded, every KLR lens
shields your eyes from dangerous sunlight in every playing condition.
The Pure interior thermal lens features 3M Foam Sealant, trapping a
layer of cool barrier of insulating air, eliminating condensation and
encouraging evaporative cooling.