Product Description Keep your fitness goals clearly in sight with the Nike Expanse Swim Mask Goggles. The pool Goggles are made from an ultra-soft liquid silicone with flex points that help to keep water out while allowing for natural facial movement. A wide head strap featuring plenty of stretch helps to ensure a comfortable fit. Durable and flexible dual-density construction helps the swim Goggles stand up to the rigors of regular use. Additional Details ULTRA-SOFT liquid silicone for optimal comfort FLEX POINTS allow natural face movement while keeping a watertight seal WIDE , stretchy head strap for a smooth, comfortable fit FLEXIBLE , durable dual-density construction