\Material: the mask and headband are made of PVCLens: 4mm thick tempered glassThe diving mirror is 16cm wide and 10cm highThe weight of diving goggles and breathing tube is 0.42 kg per setLength of respiratory tube: 45.5cmWeight: 0.42kg * 60 + 2kg = 27.2kgColors available: blue black yellow greenTempered Glass Lensour snorkeling mask is with nose cover ,which is perfect for users who do not know how to stop breathing by nose when swimming,snorkeling or scuba diving.However,lens of diving masks are made by tempered glass,which is different from normal swimming goggles with plastic lens.So PLEASE DO NOT JUMP INTO WATER WITH WEARING THE MASK !!!Perfect fitting and anti-leakour swim mask is perfect fitting for junior and adults.Please kindly tighten the mask by pulling the strap and ensure the silicone skirt fully absorbed on your face,then it ensures that no water will leak in while swimming,snorkeling and scuba diving.So please confirm whether you have tightened the strap sufficiently while using the diving goggles.Full dry snorkelOur snorkel is made by food grade silicone and PP.Full dry snorkel with Valve is perfect for using inhale fresh air when the top of snorkel is above water and keep the snorkel tube dry when the top of snorkel is below water.