• 【High-Quality Waterproof Material】The hydration pack is made of high-quality polyester material, which is effectively waterproof，This hydration vest bag pack with reflective material, which can ensure safety in any light at night，even in light rain days, don't worry about the items in the backpack getting wet.
• 【Compact & Lightweight】This hydration vest bag only weighs 0.5KG, is lightweight and portable, and is very suitable for outdoor sports such as cycling, hiking, jogging, night running, mountain climbing, exploring, and marathons. The hydration pack adopts a compact design, which makes it feel light and stable on your back, and won't create a ton of wind resistance, reduce the burden of moving forward, and keep your body functioning at peak performance .
• 【Running Bags with Adjustable Straps & Versatility】The hiking backpack with hydration bladder, two belts are designed to solve the problem that chest straps will make the neck uncomfortable when riding.the shoulder strap is adjustable and a clip is designed to fix the position. There is a separate pocket inside the hydration pack to store other items such as a cell phone. The backpack has a mesh pocket that can secure your cycling helmet to the backpack so it doesn't fall off.
• 【Hydration Backpack】The straw is 104cm long，hands-free drinking tube with suction cup mouthpiece, gently bite to let the liquid flow. It is completely pressure-tolerant and leak proof for carefree biking, running, hiking and other outdoor adventures! Before your first use rinse out your backpack with lemon juice or warm water to remove any residues.
• 【The best choice for giving gifts】The backpack is unisex and has a capacity of up to 20L. The water bag can hold 2L of liquid. It is the best choice for outdoor travel. It is also a Christmas, Thanksgiving, Father's Day, Mother's Day, birthday gift and Gifts for other holidays.