Hydro Flask Small Packable Bottle Sling Black. Our Packable Bottle Sling Keeps A Low Profile When Not In Use But Stays Light When You Need Hands-free Hydration. Specifications for Hydro Flask Small Packable Bottle Sling: Manufacturer: Hydro Flask Height: 7.17 in Size: Small Application: Carrying Weight: 0.22 lb Package Contents: Hydro Flask Small Packable Bottle Sling Hydro Flask PBSSR001: Small Packable Bottle Sling Black