Spearfishers need to see more. The Mares Jupiter Single-Lens Dive Mask has a single lens and frameless designed to provide a wide field of vision. Dive without worry as the silicone skirt effectively seals out water. This skirt is designed to fit bigger faces. Easily adjust the size to fit your face with the pivoting buckle. The Mares Jupiter Dive Mask goes to the deepest places with you.