Klean Kanteen's Nylon Sling is made of lightweight, durable nylon with a fully adjustable strap that can be worn over the shoulder or across the chest.  This sling is high quality and very functional!  The Klean Kanteen Nylon Sling holds your Klean Kanteen securely while keeping your hands free.  It is very easy to drink from your Klean Kanteen without removing it from the sling.  Available in 2 sizes to fit the 27 oz or 40 oz Klean Kanteen.