Clean lines and a massive field of vision compliment the impressive array of technology that's packed into both the lens and frames. With a Spy's Quick Draw lens change system, the Spy Ace Goggles has you covered when the clouds roll in. Flex Frame SPY's polyurethane flex frames fit comfortably to the contours of your face, no matter how cold it gets, so you can save your stiffies for the lodge. Silicone Ribbing Silicone-lined strap prevents the goggle from slipping on your helmet or headwear. Triple Layer Isotron Face Foam Triple layer Isotron face foam is constructed of three different densities of material, each one adding to the comfort and functionality of your goggles. The topmost layer features SPY's moisture-wicking Dri-force fleece, which pulls sweat away from your face and out through the foam. All the comforts of bed, and built to shred. Scoop Ventilation System Combats lens fogging by promoting airflow between the lens and the face. 100% UV Protection All SPY lenses offer 100% UVA, UVB, and UVC protection.