Features: 100% brand new and high quality The three-layer fabric makes it more excellent in heat preservation and cold preservation. The outer layer is made of polyester, which is abrasion-resistant, water-repellent, and scratch-resistant; the middle layer is made of pearl cotton, which is shock-absorbing, heat-preserving and anti-impact; the inner layer is made of aluminum foil, which has the function of heat preservation and cold preservation. The outer net pocket storage bag design can hold mobile phones, energy bars, etc. It is installed with three straps to prevent shaking when riding. The upper two straps can adjust the strap position according to the ratio of the frame space. The bottom is designed with drainage holes to ensure that no water accumulates in rainy days. Package Includes: 1x Water Bottle Bag. Specifications: Material: Polyester Color:Black Size: as Picture Shown note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you