Used Mares X-Vision Ultra LiquidskinThe X Vision Ultra dive mask features a new bi silicone facial geometry for a better fit on various face types. The optimized profile ensures a superior seal, while the nasal area has improved small ribs for pressure relief and enhanced comfort during extended wear. The two button buckle allows for easy operation, even when wearing gloves. The strap is made of bi silicone, with a softer part for added comfort and a more rigid part for better stability