ROKA S1 Swedish Swim Goggles Low Profile High Performance Goggles for Competitive Swimming Lens:35 (W) x 26mm (H) premium grade polycarbonate lens - classic Swedish shape Gaskets: Soft, protective & hypo-allergenic TPR overmould gaskets; no latex, no PVC Lens Coating: Anti-fog coating Nose bridge: String and tube for maximum adjustability Strap: Flat silicone head strap with locking adjustment clip