Molle System Compatible 550ml Water Bottle Holder Can Hold Water Bottles and Water Bottles up to 550ml Molle strap with velcro and button to prevent it from coming off. Can be attached to any MOLLE compatible bag. It can also be attached to a belt, making it convenient to carry plastic bottles. The mouth has an adjustable drawstring to squeeze it tightly to prevent the bottle from falling out. Size: Height 7.1 inches (18 cm) x Diameter 2.8 inches (7 cm); Weight: 2.5 oz (72 g); Material: High density nylon; Uses: Outdoors, marathons, running, biking, cycling, walking, jogging, mountain climbing, tourism.