1. Premium hydration bladder: The hydration bladder is made of highquality materials with durable thickness. It has strong resistance to compression and abrasion, perfect for all outdoor adventures. 2. Large capacity and wide opening: The tank has a capacity of 2.5 litres, allowing you to take enough water to stay hydrated throughout your activity. The wide opening of the tank ensures easy water refilling. It's convenient to refill ice at any time and also convenient to wash the water bag to maintain hygiene. 3. Comfortable hydration bladder: The hydration bladder has a tube length of 100 cm and a leakproof design to keep your belongings dry. It has an easytouse diverter valve. Pull the valve up and bite into the nozzle to draw water. Press down to close the valve. 4. Versatile: The hydration bladder is compatible with most backpacks and hydration bags, making it easy to integrate into your equipment. It provides you with fluid during hiking, camping, cycling, running, mountaineering, skiing and other activities.