Dye i4 Mask (Camo) One of the smallest profile, lightest, and best field of vision goggle systems currently available. The i4 goggle is the apex of DYE’s long legacy of goggle engineering. The thermal lens leads the industry in optical clarity and provides a distortion and fog-free field of vision regardless of the weather. The i4 system also has various lens options to match your lighting conditions. Product details: Thermal Lens Co-Moulded Frame Polycarbonate Lens 300 Stitch Count Strap ASTM Certified Chin Strap Anatomic Fit & Function