Engineered for flexibility, the Nike Swim Flex Fusion Pro goggles were made to move with you. Premium liquid silicone gaskets increase comfort, fit and durablity, providing a plush and cushioned feel. Push-button adjustment is easy to use and lets you quickly adjust your fit. The soft, flexible design allows for natural movement while maintaining a watertight seal. Curved lenses enhance your peripheral vision. Ultra-soft liquid silicone for optimal comfort. Super-soft, flexible design moves with you and contours to your face for a snug, watertight fit. Curved lenses enhance peripheral vision and clarity. Push-button adjustment makes it easy to tighten or loosen your straps while swimming. Secure silicone split head strap for added stability. 100% Latex Free Lens/Frame: Polycarbonate, Gasket: Liquid Silicone, Strap: Silicone, Buckle: Polycarbonate