This hydration backpack combines a 15L storage capacity with a 3L TPU water bladder for hiking, running, cycling, camping, and travel. Its waterproof 420D polyester construction is designed for durability in outdoor conditions. The backpack features multiple storage areas, including inner pockets and an exterior elastic cord for extra gear. Breathable back padding and padded shoulder and waist straps help provide comfortable all-day wear. A leak-resistant bladder design with a shut-on off valve helps make hydration easy on the go.