... vacuum coffee flask 1.stainless steel coffee flask 2.keeps beverage hot or cold for 24 hours 3.unbreakable 4.double- walled high ... proof, rustproof and unbreakable3) We adopt durable, high quality , stainless steel4) Polypropylene lids are non ... ,such as stainless steel cup,travel cup,vacuum flask,thermos cup,coffee mug, etc. ... benefit ! 2.0L Double wall stainless steel vacuum insulated coffee flask