Features Lightweight fabric easily packs down into its own pocket for quick storage or travel.​ Stretch mesh pockets conveniently hold cards, keys, lip balm and some phone models. Fully adjustable nylon ripstop strap can be worn across the body or over the shoulder.\ Specs Diameter:  3.5in Height:   7in Weight:   4.32oz (Medium Sling fits 32 and 40 oz wide mouth bottles)