INOXTO Water Bag Vest, 5L Light Running Backpack, Adjustable Chest Strap, Suitable for Marathon, Hiking, Biking, Mountaineering Men and Women (Light gray, standard)

【Ergonomic and Comfortable Design】: The backpack is made of 3D polyester network, which keeps air circulation, makes the back more refreshing, prevents heat collection and makes you uncomfortable and provides you with good air circulation. The chest strap can be adjusted according to your needs. 【Lightweight Design】: This multi-purpose hiking backpack bladder vest is made of high-quality nylon material with a soft wool wrap to reduce friction in the body. It weighs about 140 grams and can hold up to 5 liters. The chest has a soft water bottle pocket and a water pocket room where you can secure enough water during outdoor exercise. 【Multiple Pockets and Reflective Stripes】: The backpack has a nighttime reflective strap design that will serve as a warning when you work out with a light source at night to ensure your safety. The main pocket room with double rooms can accommodate water bags and lightweight clothing and more. The front talk and pocket can hold a 500ml soft water bottle or energy supply, while the zippered bag can hold a 6.6-inch phone so you can listen to music and jog at the same time. 【Wide Application】: This outdoor backpack has a neutral design for men and women, is very suitable for both men and women, has reinforced and stable shoulder straps, compact structure, small size, smaller size, wind resistance and easy to carry. Perfect for cycling, hiking, camping, traveling, hiking, mountaineering, racing and training, and many other outdoor sports. 【Inoxto Water and Backpack】: We promise you that we are committed to providing you with excellent products. If for any reason you are not satisfied with the product, please contact us and we will be happy to help you.