SPY+ premium lenses eliminate distortion at all angles, increasing clarity and providing an optimal viewing experience while reducing eye strain and fatigue; Anti-fog cylindrical dual-lens provides increased optical clarity; Comes with a free bonus lens so you're covered in any light conditions; Anti-scratch coating provides enhanced impact protection; 100% UV protection shields your eyes against damaging high-altitude sunlight; Custom built from flexible, durable polyurethane for seasons of use; Scoop ventilation system increases air flow and decreases fog-causing sweat and moisture; Triple-layer Isotron face foam with moisture-wicking Dri-Force fleece provides comfort while drawing fog-causing sweat off your face; Compatible with the most popular helmets on the planet; Silicone-lined strap prevents the goggle from slipping on your helmet or headwear