The KONG CADDY Neosling bottle holder is a stylish, comfortable and convenient way to carry fresh water for your dog wherever you go. Perfect for days out, long walks or training. Made from Neoprene, it is designed to fit both the 9.5oz and 25oz H2O4K9 water bottles. Practical yet classy, it has a wide, soft adjustable strap allowing the Neosling botlle holder to sit comfortably over the shoulder without digging in or chafing and at a length at your side which is both convenient and comfortable allowing you to keep both hands free to play with your dog or hold its lead. The Neoprene material incorporated within the Neosling insulates the bottle in all seasons from heat or cold, keeping the water at a temperature you expect it to be for up to four hours.