- Durable Material : This hydration backpack is constructed from high-density 900D fabric, ensuring lightweight durability for long-lasting use. The water reservoir is made from a soft, non-toxic PE+EVA, making it safe for hydration during outdoor activities. The soft back panel enhances comfort and breathability. - Multiple Functionality : The hydration pack comes with an integrated, removable water bladder, designed for easy access through an external opening. The rear compartment is spacious enough to store personal essentials such as your smartphone, wallet, and keys, making it ideal for adventures. - Adjustable Fit : Equipped with two adjustable shoulder straps and a secure harness, this hydration pack minimizes movement during activities, ensuring a snug fit for both men and women. - 3L Water Capacity : The 3-liter water reservoir provides ample hydration for your outdoor excursions. Its wide opening allows for easy cleaning and the addition of ice. The On/Off valve facilitates water flow regulation while preventing leaks. - Use Scenarios : Perfect for hiking, biking, and running, this hydration backpack keeps you hydrated and focused on your activities. Its practical design makes it suitable for day trips, fitness training, and casual outdoor outings, providing convenience and comfort every step of the way.