Tactical bag easily attaches to other Molle equipment. Drawstrings open the top and bottom mesh lining, and flexibility makes the bag easy to use and release. Size: This tactical bag fits most standard size water bottles. Diameter: 3.55 inches; Height: 9.05 inches. Mesh bottom design prevents water from collecting at the bottom of the bag. Material: 1000D nylon, long-lasting durability, premium lining. Great material. SYSTEM: The Tactical Water Bottle Bag attaches easily to other Moller equipment and is easily reinforced to prevent bottles from pulling down or flipping over due to gravity while walking or jogging. Purpose: The accessories we have prepared for you will work with this tactical water bottle bag, making it more convenient for you to use