Whether your adventures find you hiking, climbing or paddling, the key to extending your treks is staying appropriately hydrated. Forget about lugging your water bottle around by hand or hauling around a bulky backpack if you don't have to. Stash your standard mouth 12-, 18-, 21- or 24-ounce Hydro Flask bottle in the Hydro Flask Small Tag Along Bottle Sling; throw it over your shoulder, cross-body style, and go. A side pocket is bonded for additional durability and closes with a waterproof zipper so you can carry along and protect other small items.