USWE 2L Elite with Plug-N-Play Ultra-Durable A hydration bag is nothing without a great hydration bladder. The USWE 2L Elite hydration bladder allows users to easily maintain cleanliness. The patented wide slide top opening allows for fast filling and a secure seal. To clean, simply slide open, reach in, reverse, and rinse. The hydration bladder is made out of TPU (thermoplastic polyurethane) and comes complete with a 45-degree Blaster bite valve, easy quick connector with Plug-n-Play, and flexible non-kinking Hydraflex drink tube. The hydration system is reversible for easy cleaning and drying. The hydration bladder has a patented wide slider opening for quick filling and a leak-proof seal, and also has RF welded seams to create superior bonds at a molecular level. Features BPA and PVC-free and is made out of FDA and EU-approved materials Comes with a 45deg Blaster bite valve and an easy quick connector with Plug-N-Play Easy to clean and dry | Uswe | 2L Elite, P&p Transparent | Polyurethane