HK Army HSTL Goggle Thermal Lens

The HSTL Goggle Lens System is composed of virgin optical-grade GE polycarbonate--inherently UVA \ UVB and IR shielded, every HSTL lens shields your eyes from dangerous sunlight in every playing condition. The interior thermal lens features 3M Foam Sealant, trapping a layer of cool barrier of insulating air, eliminating condensation and encouraging evaporative cooling. Details Anti-Fog Thermal Layer Optical Grade Polycarbonate Works only with HSTL Goggle and HSTL Skull Goggle not included