It has two walls insulated in vacuum. The use of double walls means that the surface of the thermos is not heated , which is felt in the form of higher user comfort. In addition, the cap can be used as a cup. The silicone seal in the plug translates into very good tightness, and the wide inlet makes it easy to pour liquids. The whole structure is comfortable to hold, despite the size of the thermos. Thanks to folded handle, transport is easier. The body and stopper are suitable for manual washing, while the cap can be washed in the dishwasher.