Preferred materials, only for making durable outdoor bags-adjustable water bottle coverAbrasion resistanceWater-resistant and wear-resistant fabric, scratch-resistant and not easy to fade, strong water resistance, even if the product is used in a humid environment for a long time, or is not easy to rot after being immersed in waterPracticality20oz-53oz water bottles can be placed, and the water bottle holder can be adjusted in size according to needsTop buckleDouble barrel buckle lock to stabilize the bottle body, using durable material, the same color as the cup body, environmentally friendly, strong and not easy to crack or deformEasy to manageThe surface is not easy to adhere to dust and stains, and it is easy to take care of