The Iron Flask 18 oz Wide Mouth Water Bottle With Spout Lid is the perfect sized bottle for your fav beverage, in other words, its cup holder-friendly. Its double-wall vacuum-insulated design ensures your hot beverages stay hot for 12 hours and your cold beverages stay cold for 24 hours with no bottle sweat. The wide mouth design promises an easy fill from your faucet, pot, or pitcher, while the spout lid makes sure you get the perfect sip every time, and if you prefer a flip lid or a stainless steel lid, we’ve included those too.