Our products are of high quality and unique design andare built to meet the needs of consumers. IX INOXTO is a professional outdoor equipmentbrand. And has been committed to the development and production of professional backpacks that meet the needs of mass sports, bringing more comfort and safety to our customers in nature. The brand has always adhered to its original intention and adhered to the design concept of "enjoy freedom and move freely", highlighting the perfect combination of freedom and individuality, sports and fashion. This waterproof hiking backpack is designed for everyday use or travel adventures. With the ergonomic design, this backpack gives you more comfortable feeling. Made of high-quality and safe material, it is durable for long-time use. It will surely contribute to your fantastic outdoor experience. 1. Pull the valve open with your hands. 2. Gently bite or seal the water outlet with your teeth or lips, ensuring there are no leaks. 3. Inhale and draw water from the bag into your mouth. 4. If the water flow is not smooth, adjust the biting position slightly (refer to the video). Separate bladder sleeve in the main compartment. Big enough or a 3 liters hydration bladder. you can keep hydrated and active all day throughout your adventure! Also, this 3-Liter hydration bladder is Detachable and has Large opening, making it easy to fill water and add ice cubes. This IX INOXTO Hydration Backpack is lightweight and comfortable, holds plenty of water, and features compartments for snacks, lunches, potty bags, and more! This bag has enough storage space to hold everything you need on the go. The bracket of the IX INOXTO frame backpack is designed with human mechanics and ventilation system to enhance support and reduce back pressure. Distributes the weight to all parts of the body reasonably, taking the pressure off the user’s shoulders and delivers a stable, comfortable carry. This large-capacity backpack features multiple storage compartments to give you plenty of storage space. Whether you're traveling or working on a daily basis, our backpack can easily accomrmodate all of your belongings. Water-resistant material can withstand scratch and overuse, suitable for various field environments. Breathable mesh shoulder straps help relieve shoulder pressure and are comfortable to use. And equipped with adjustable elastic shoulder straps. High-quality durable zippers are smoothly and not easy to come off. The long zipper cord pulls, help your easy to open and close the pocket. There is a waterproof rain cover in the bottom pocket to protect the hiking backpack in the rain and keep everything dry during inclement weather. Hiking Backpack 12L Hydration Backpack Internal Frame Backpack 20L Hydration Backpack