Aqua Sphere Ladies/Womens Seal 2.0 Clear Lens Swimming Mask Silicone, , 180 panoramic vision. Quick-and-easy strap adjustment. 100% Silicone skirt assures comfort and a leak-resistant seal. 100% UVA/UVB protection. Special matte and smooth areas on the Silicone skirt strengthen the seal and enhance comfort (advanced fit technology).