This large hydration backpack features a 3l large capacity TPU water bladder, which is secure, with no BPA and odor, to ensure you stay hydrated throughout the day. Made from premium waterproof 420D polyester, it withstands wear and tear, ideal for various outdoor activities. The lightweight and comfortable design includes breathable padding that conforms to your body, multiple compartments, and customizable storage cord for organized gear storage. The built-in aluminum insulation layer keeps your water cold, making it ideal for cycling, long hikes, outdoor travel, and mountain climbing. Enjoy your every journey with ease and convenience, cool and smooth. Color: Blue with Silver Gray.