Adjustable Shoulder Strap: The water bottle sleeve comes with a shoulder strap for easy carrying. Insulates Bottle: The neoprene material keeps drinks cold or warm for longer by insulating the bottle. Protects From Scratches: The flexible neoprene material prevents scratches and dirt when hiking or exercising. Multiple Compatibility: Fits 32 oz Nalgene, Hydro Flask, IRON °FLASK and other wide-mouth bottles. Lightweight and Washable: The water bottle sleeve is lightweight, washable and prevents condensation from building up on the bottle. Package included 1 pcs water bottle holder with strap and zipper.