You can drink water without removing the bottle from your backpack. Easily converts a standard water bottle with a threaded opening into a convenient hydration reservoir. Made from food-grade TPU, PE, and silicone materials—safe, BPA-free, and durable. Compatible with most water bottles featuring 28mm or 30mm threads. Includes a transparent hose that can be adjusted to desired length. Total hose length: 40cm / 15.7in. Features a handy clip for securing the hose to a backpack or other gear. Soft bite valve with dust cover ensures clean drinking water. Connected strip between dust cover and mouthpiece prevents loss. Air valve included to help prevent leaks. V-shaped hose design allows for smooth and fast water flow. Ideal for trekking, fishing, climbing, hiking, rafting, canoeing, boating, backpacking, kayaking, cycling, and other outdoor activities. Material: Food-grade TPU + Silicone + PE Hose Length: 80 cm / 31.5 in (Blue), 40 cm / 15.7 in (Transparent) Package Size: 18 x 14 x 4 cm / 7.1 x 5.5 x 1.6 in Package Weight: Approx. 128 g / 4.5 oz Package List: 1 x Water Bottle Hose