•【Durable and Breathable Material】Made from 90% nylon and 10% spandex, this outdoor backpack is soft, breathable, and reduces friction on the body for enhanced comfort during long hikes or activities. •【Enhanced Night Visibility】Reflective elements are strategically placed throughout the backpack to improve visibility and safety during nighttime or low-light conditions. •【Multiple Convenient Pockets】Designed with multiple pockets, this backpack provides easy access and storage for your phone, water bottle, keys, and other essentials. •【Storage Pocket & Key Ring】The backpack features a convenient storage pocket on the back and a key chain for easy access to your keys, ensuring organization and practicality. •【Lightweight & Comfortable】Weighing only 130g, this backpack is lightweight and comfortable, ensuring that it won’t add unnecessary strain or burden to your body while on the go. Specification: •Size: 45*24*42cm •Material: 90% nylon + 10% spandex+polyester mesh •Net weight: about 130g •Capacity: about 3.5L Package included: •1 x Running Vest Backpack •Other things not included