Feature: 1. The widened belt design increases frictions and is sturdy and nonslip. 2. Easy to wear and remove, and firm in use. 3. Dual pockets, large capacity, can store items such as mobilephones, keys, headphones, door cards, etc. 4. Waterproof fabric, not afraid of wetting the contents of the bag on rainy days. 5. Honeycomb mesh design, comfortable and breathable without stuffiness. 6. Dual zipper, wear-resistant and smooth, convenient in use. Specification: This arm bag is designed specifically for sports, with adjustable belts, suitable for various arm sizes. It can store items such as mobilephones and keys during exercise, making exercise more convenient. Features: The widened belt design increases frictions and is sturdy and nonslip. Easy to wear and remove, and firm in use. Dual pockets, large capacity, can store items such as mobilephones, keys, headphones, door cards, etc. Waterproof fabric, not afraid of wetting the contents of the bag on rainy days. Honeycomb mesh design, comfortable and breathable without stuffiness. Dual zipper, wear-resistant and smooth, convenient in use. Specifications: Color: black, orange, green, grey (optional) Material: polyester+PU+PVC Bag size: 185 * 95mm / 7.3 * 3.7in Belt size: 250 * 50mm / 9.8 * 2.0in Item weight: 65g / 2.3ounce Package size: 180 * 110 * 30mm / 7.1 * 4.3 * 1.2in Package weight: 76g / 2.7ounce Packing List: 1 * Arm Bag Package List: Packing List:1 * Arm Bag