1.Size Material: Suitable for water bottles with a capacity of 450600ml/15.520oz. Made of neoprene material, it is easy to clean, durable, and will not deform after longterm use. 2.Prevent Burns: The water bottle bag is made of soft and lightweight neoprene material, which provides insulation and reduces the risk of hand burns. 3.Avoid scratches: Suitable for stainless steel, plastic water bottles and various sports drinks, it can effectively protect the surface of the bottle from scratches, squeezing and other damage. 4.Wide application: Suitable for study, commuting, running, hiking, cycling, camping, travel, and even beaches, gyms or sports events. These water bottle bags are commonly used accessories to help you carry water bottles easily. In addition, it not only provides good protection for your water bottle, but also keeps your water bottle warm or cold.