The Mares X-Vision mask's success comes from meticulous design and numerous tests. The central position of the eyes and the optimally angled windows provide the widest possible viewing angle in every direction. The X-vision Mask has quick-adjusting ergonomic buckles that are positioned directly on the skirt: the mask can easily be stowed in a pocket of the BC. The X-Vision Masks low internal volume, low drag design and its very light weight 6.7 oz. (189 g) The X-Vision has dual tempered safety glass lenses, a double feathered edge ultra-clear silicone rubber skirt and wide X-shaped silicone split mask strap, Small ribs around nose help relieve pressure on the face. Mask is equipped with an easy to reach nose pocket that allows one-handed ear equalization even when wearing gloves. This product is also able to be fitted with Mares Optical Lenses - see related products.