Come and see our amazing products. 100% odorless, tasteless, BPA- Free PEVA material.Wide top opening design. As the most popular design for high end hydration systems in recent years, this allows you to refill and clean easily.Large Opening Water Hole - Water hole cover on 2L/70OZ hydration bladder goes on and off easily, which helps you fill water or add ice cubes into the bladder bag to get cold water and keep sealed.You can simply turn on the valve and bite the mouthpiece to suck water, and lock it after drinking. When opening the hole cover, you can clean the inner of the water bag with tools Pls confirm with us about the packing info, stock color and exact production time before placing your order.