FIT: of 3.34 inch(Diameter) x 6.29 inch(Height), and this multifunction water bag fit most standard size water bottles (550ml), size fit most bottle. UPGRADED Adopts nylon , which is with excellent , more tearing tension up to approx.40kg, and also heat-insulated, and long-lasting. WATER : water bags, and , and excellent flexibility makes the water easy to use and release. WIDELY APPLICATION: The compact size and makes this water bottle holder a perfect-choices for various outdoor activities such as camping, fishing, hiking, camping, cycling, . : The back buckles can keep your water bottle solidly when attaching to any vest, battle belt or carabiner for the weight of the water bottle from pulling the down.