Warmsip is a straight thermos cup with a 304 stainless steel inner tank and a 201 stainless steel outer shell. Its double-layer construction pairs the two steel materials in one portable cup.
The cup has a small-mouth opening and a sports style. Its stated thermal insulation performance is 6–12 hours; this describes the product specification, not a guarantee of how long a drink will stay at a particular temperature.
Why it works
The 304 stainless steel inner tank and 201 stainless steel shell provide clearly defined materials for the two layers.
A stated 6–12-hour thermal insulation performance gives a time range to consider when comparing insulated cups.
Specifications
Product type: Straight thermos cup
Inner tank: 304 stainless steel
Outer shell: 201 stainless steel
Opening: Small mouth
Thermal insulation performance: 6–12 hours
Packaging: Single
Common questions
What materials are used in this thermos cup? The inner tank is 304 stainless steel, and the outer shell is 201 stainless steel.
How long is its thermal insulation performance? The stated performance range is 6–12 hours. No specific drink temperature or test conditions are provided.
What shape and opening does it have? It is a straight cup with a small-mouth opening.
