Martes Ozzos Set 92800480968 diving set Properties: DIVING SET SIZE: ADULT MATERIAL COMPOSITION: MASK: LENS: TEMPERED GLASS SEALING COLLAR: PVC STRAP: LIQUID SILICONE OUTER FRAME: PC INTERNAL FRAME: PC DIVING TUBE: TUBE: PVC MOUTHPIECE: LIQUID SILICONE HOOK (FASTENING TO THE MASK): PC - SINGLE GLASS TEMPERED GLASS BOTTOM VALVE EASY ADJUSTMENT;Martes Ozzos Set 92800480967 diving set Properties: DIVING SET SIZE: ADULT MATERIAL COMPOSITION: MASK: LENS: TEMPERED GLASS SEALING COLLAR: PVC STRAP: LIQUID SILICONE INNER FRAME: PC INNER FRAME: PC DIVING TUBE: TUBE: PVC MOUTHPIECE: LIQUID SILICONE HOOK (MASK FASTENING): PC SINGLE GLASS TEMPERED GLASS BOTTOM VALVE EASY ADJUSTMENT