Zoggs Ultima Air Soft Frame Goggle Silicone Split silicone headstrap fits over the crown of your head to keep goggle securely in place Air cushioned seals reduce pressure around the eyes Curved lens technology provides expanded 180 degree vision Quick adjust: just pull the two straps to tighten and push button to loosen Split silicone headstrap fits over the crown of your head to keep goggle securely in place Anti-fog: lenses are coated with fogbuster anti-fog for clear vision