The Iron Flask 22 oz Water Bottle With Straw Lid makes staying hydrated easier—and cleaner—than ever before. Thanks to this stainless steel water bottle’s double-walled vacuum-insulated design, you can avoid the supreme letdown of a room-temperature beverage and keep your drinks cold for 24 hours and hot for 12 hours with zero bottle sweat. This cup holder-friendly companion includes a flip lid and a stainless steel screw-on lid apart from the straw lid, making it extra versatile.