The bag’s fabric is Oxford and lining is polyester. The fabric is environmentally friendly, waterproof, wear-resistant, tear-resistant, stain-resistant and low temperature resistant. The buckles on the shoulder straps are all freely adjustable according to individual needs, and each shoulder strap connection is reinforced to make the shoulder straps sturdy and not easy to break. The back is breathable design to reduce the stuffy feeling during exercise. The bag is waterproof design, the bag has two front zipper pockets and one main pocket, which can hold cell phones, wallets, card wallets, keys, tissues and other daily items, which can be well organized inside the bag. Ideal for running, cycling, workouts, hiking, trekking, etc.