Specifications:Lens material: PC polycarbonateLens ring material: siliconeStrap material: siliconeSize: lens height 4.5cm, lens length 6cm, swimming goggles total length 14cm, nose bridge length 2.5cm, strap total length 36cm adjustableFeatures:【Polarized Swim Goggles】--swimming goggles featured with polarized lens, provides better eyes protection against harmful UV rays and lights.【Comfortable Fit】--Ergonomic design with soft silicone gasket, that creates a perfect seal around your eyes, ensuring no water in. 【Anti-fog & Wider Clear View】--Curved Lens Design offers 180° wide field of vision with exceptional hydrodynamics. The inner surface of the lens has an advanced anti-fog coating, which offers you a clear and long distant view so that you could focus on swimming under water.【Unique Hollow Design】--The hollow frame combined with soft gasket design reduces the weight of the swimming goggles. It is more comfortable and lighter to wear the swimming goggles. 【Suitable for】--The outer eyes fit and Lightweight design will satisfy your daily use and training. Perfect swim goggles for adults mens women youth.Package Included:1* Swimming GogglesNote:1.Please allow 1-3cm size deviations due to manual measurement,measuring methods and tools.2.The picture may not reflect the actual color of the item because of different photographing light and display monitor.Thanks for your understanding.