Easy to carry anywhere. Take your Hydro Flask bottle with you to walk, hike or attend a music festival. Our Packable Bottle Sling keeps a low profile when not in use, but stays light when you need hands-free hydration. 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. Small Sling fits 18, 21, and 24 oz standard mouth bottles. If your bottle is larger, check out the Medium Packable Bottle Sling!. Diameter: 3″. Height: 7.17″. Weight: 3.52 oz.