The Vevor hydration backpack combines a 15L storage capacity with a 3L TPU water bladder for hiking, cycling, running, camping, and travel. Its waterproof 420D polyester construction is designed to resist tears and abrasion in outdoor conditions. The pack features a large opening for easier filling and cleaning, plus a leak-resistant shut-on/off valve and 360° mouthpiece with dust cap. Breathable mesh back padding and padded shoulder and waist straps help provide comfort during extended use. Multiple pockets and an external elastic storage cord keep gear organized and accessible.