You can drink water without having to take the bottle out of your backpack.<br> Features:<br> Easily converts some bottle with a threaded-opening into a handy hydration reservoir.<br> Adopts food grade TPU,PE and silicone material,safe,BPA free,durable to use.<br> Easily attach to most water bottles with 28mm/30mm thread.<br> Transparent hose can be adjusted as you need.Total Length: 40cm/5.5in.<br> Handy clip to easily attach the hose to your backpack or elsewhere.<br> Soft bite mouthpiece with dust cover,ensure have the clean water.<br> There is a connected strip between the dust cover and bite mouthpiece,will not lose the dust cover by accident.<br> Air valve(color by random) to prevent leaking easily.<br> V-shaped design of the transparent hose provides fast water flow.<br> Suitable for trekking,fishing,climbing,hiking,rafting,canoeing,boating,backpackingkayaking,cycling,etc.<br> Specifications:<br> Material: Food grade TPU + Silicone + PE<br> Blue Hose Length: 80 cm / 31.5 in<br> Transparent Hose Length: 40 cm / 15.7 in<br> Package Size: 18 * 14 * 4 cm / 7.1 * 5.5 * 1.6 in<br> Package Weight: approx. 128 g / 4.5 oz<br> Package List:<br> 1* Water Bottle Hose<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin