Rapid Lens ChangeMulti-Directional VentingPeripheral VisionOne of the smallest profile, lightest, and best field of vision goggle system 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 weather. The i4 system also has a variety of lens options to match your lighting conditions. Product details: • Thermal Lens• Co-Molded Frame• Polycarbonate Lens• 300 Stitch Count Strap• ASTM Certified• Chin Strap• Anatomic Fit & Function