DIVING SET SIZE: ADULT MATERIAL COMPOSITION: MASK: - LENSES: TEMPERED GLASS - SEALING STRAP AND COLLAR: LIQUID SILICONE - FRAME: PC Snorkel: TUBE: PVC MOUTHPIECE: LIQUID SILICONE BOTTOM VALVE: PC + TPE UPPER "DRY SNORK" VALVE: PC SPECIFICATIONS: MASK: - SINGLE LENS - EASY ADJUSTMENT - LIQUID SILICONE - TEMPERED GLASS - SILICONE MOUTHPIECE Snorkel: - BOTTOM VALVE - DRY TOP SYSTEM (I.E. DRY VALVE)