M1 Anti Pollution Half Face Mask Medical Face mask

100% Band new and high quality Constructed by waterproof 600D high density Nylon material. Two layers cargo design, one for hydration bladder, and the other for extra carrying purpose,can hold digital products and other stuff.. Adjustable shoulder strap and chest belt, suitable for heavy carrying Equipped with a tube with a bite valve to drink, so you don't need to hold it to drink A switch on/off bite valve, convenient for control the flow of water No Taste, No Virulent Neoprene tube cover keeps water cool for hours Bite Valve Cover keeps Bite Valve clean from dirt Perfect to use when hiking, rock-climbing , riding and other outdoor actives