Come and Check Our Promo Solutions.Made of polyester fiber, lightweight, scratch-resistant, breathable and comfortable. A breathable mesh pad is integrated on the back to maximize breathability and heat dissipation, providing you with long-term and safe daily use. Convenient and simple design: adjustable shoulder straps and waist belts can meet your riding, jogging and running needs. Suitable for men, women and children. Design multiple storage locations to facilitate the carrying of various necessities. 16.9"L x 8.6"W Pls check inventory and detailed info with us before placing your orders.