Divers who have trouble finding that important proper mask fit will love the Ultra. It will fit standard to wide faces comfortably and will accommodate facial hair, large noses and high brows. SeaVision's Ultra Series mask is a comfortable fitting low volume two window mask. Mask is equipped with swivel buckles and its double feathered edge skirt is made from Crystal Silicone the highest grade of silicone available. The lenses are made from high quality composite hard resin material (CR-39) which makes them stronger than normal glass lenses and much more efficient. Mask has an easy to reach one hand nose pocket for ear equalization and a wide split strap design that works in concert with the double feathered edge skirt for a perfect seal on the face.