Hydro Flask’s Coffee 16oz flask now features their new Flex Sip Lid, for smoother sipping and stress-free transportation. The ultimate replacement for disposable coffee cups, the vacuum-insulated stainless-steel bottle will keep your drink at its optimal temperature, and its powder coating ensures a good grip. The Flex Sip Lid is leak-proof, can be quickly disassembled for easy cleaning, and has a flexible strap for a comfortable carry.