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