The NATURE PIONEOR Neoprene Insulated Water Bottle Holder Shoulder Strap is designed to hold water bottles with sizes ranging from 25 to 40 oz. Made of 1200D Oxford and neoprene, this adjustable shoulder strap features a solid purple color, perfect for outdoor activities. The insulated design keeps drinks cool for longer periods, making it ideal for camping and hiking adventures. The water bottle holder also has a utility pocket and a drawstring and zipper closure for added convenience. Perfect for sport enthusiasts looking for a durable and stylish way to carry their water bottles.