This is the HydroFlask PACKABLE BOTTLE SLING. Color: Pink It's lightweight and compact when stored. The ripstop strap is adjustable. It has a pocket made of stretch fabric, convenient for storing keys and IC cards that you want to access quickly. It's made of durable, waterproof material. ● Height: Approximately 18cm ● Width: Approximately 7cm Probably size S ● Material: Nylon I have never used this item and have kept it stored. I am looking for buyers who understand that it has been stored by a private individual. Please forgive any minor imperfections down to the millimeter. Thank you very much.