This Extra Small Stanley Classic Thermos Flask is made with superior insulation that keeps liquids hot or cold drinks cool for 15 hours. This Stanley Coffee Flask is built to last with 18-8 high-quality food-grade stainless steel construction that’s rugged and rust-proof; It’s also made with BPA-free materials, keeping its contents safe to consume. The Stanley thermos is designed with a leak-resistant lid, so you can put it in your backpack without worrying about any spills; The wide mouth of the thermos helps with easy pouring into the lid that doubles as a cup. This thermos is designed to clean easily; Every piece of this stainless steel flask is dishwasher safe, top rack only