You can drink water without having to remove the bottle from your backpack. Features: Easily turns a bottle with a threaded hole into a handy water container. Adopts TPU, PE and silicone food grade material, safe, BPA free, durable to use. Easy attachment to most water bottles with 28mm/30mm thread. The transparent hose can be adjusted as needed. Total length: 40 cm/5,5 inches. Handy clip for easy attachment of hose to backpack or elsewhere. Soft mouthpiece with dust cover, make sure you have clean water. There is a combined strap between the dust cover and the bite mouthpiece so that you don't accidentally lose the dust cover. Air valve (random color) to prevent easy leakage. The V-shaped transparent hose design ensures fast water flow. Suitable for trekking, fishing, climbing, hiking, rafting, kayaking, boating, backpacking, cycling, etc. Technical data: Material: food grade TPU silicone PE; Blue hose length: 80 cm/31,5 inch Length of transparent hose: 40 cm / 15,7 inch Package weight: approx. 128 g / 4,5 oz List of packages: 1 * water bottle hose;