The photochromic goggles deliver unmatched optics for all-mountain exploration. The frameless design maximizes your field of vision, while the premium optics with SONAR and Toric lens technology offers contrast-boosting, terrain defining clarity for all terrain and weather conditions. The photochromic lens adjusts the tint to match the light conditions and give you the best visibility possible. The dual-density foam and a hinge-style strap let the goggle conform to your head for a comfortable, storm-sealing helmet interface.