Aqua Sphere Seal 2.0 Swim Mask Goggle Tinted Lens Black Frame Regular Adult Lens material: Plexisol. Anti-Stratch outside protection treatment. Anti-fog inside protection treatment. UV-protection 100%. 180 field of vision. Labyrinth Seal Technology. Silicone strap. Micrometric lever buckles allow for easy strap adjustment. Latex free. Plastic case is clear and reusable.