Engineered for visibility, the Nike Swim Expanse swim mask is made with oversized, panoramic lenses. The wide, stretchy strap won't snag hair, and the 100% liquid silicone gasket allow sfor natural movement while maintaining a watertight seal. Benefits:Ultra-soft liquid silicone for optimal comfort. Flex points allow natural face movement while maintaining a watertight seal. Wide, stretchy head strap provides a smooth, comfortable fit. Flexible, durable dual-density construction. [] Product Details:Mask:Polycarbonate / Liquid Silicone, Strap:Nylon / Latex, Buckle:Polycarbonate. To obtain maximum benefit, keep lenses free from dirt and grease. Wash gently in clear cold water after each use. DO NOT wipe or rub the inside of the goggles. Style: NESSC151; Color: Atomic Green; Size: One Size; Gender: Unisex; Age Group: Adult | Nike Swim Expanse Swim Mask in Green, Size: One Size | NESSC151-312