Dye I4 I5 Thermal Goggle Lens Dyetanium Northern FireThis is the Dyetanium Northern Fire lens for the Dye i4 and i5 paintball mask. The Dyetanium Lenses for the i4 i5 Goggles allow you to improve your vision on the field with adjusted tints and optimal coatings for a wide range of weather and light conditions. This lens fits both the Dye i4 and the Dye i5 masks. Anti Fog Thermal Lens The i4 i5 features an industry first compound radius lens with thermal technology, giving the player the ultimate