Wide-open visibility and a sleek, streamlined design. The large lens expands your peripheral view in every direction and discreet frame notches at the temples make these compatible with prescription eyewear. Medium and large frames available for your preferred fit. Dual pane lens for reduced fogging and a wide field of view. Flexible frame material conforms to your face and maintains flexibility even in extreme cold. Triple-layer moisture wicking foam has a fleecy layer that is comfortable against your skin. Silicone beads on the inner surface of the strap hold it in place. Anti-fog coating is designed to work with cylindrical lens geometry.