calpak Water bottle holder sling bag. black. NWOT. description from calpak: Crafted from water-resistant ripstop nylon for durability and peace of mind. • Constructed with wipeable materials to withstand daily wear and tear. • Features an insulated interior to keep your beverages at the perfect temperature. • Equipped with multiple exterior pockets for convenient storage of essentials. • Includes a top carry handle for easy transportation. • Comes with a detachable shoulder strap for hands-free convenience.