Mares X-Free MaskX Free Mask The X Free diving mask is the new mask from the Scuba Diving product line. The design is expressly designed for diving: the seal between the over moulded frame and the anatomical face piece is even more powerful. The strap with ergonomic buckles offers easy adjustment while the embossed area on the nose facilitates balancing even with gloves. The weight is truly minimal: only 147 g of pure technology. Available in multiple colour