It is a blanket with sleeves that a person wears to stay warm.

VOA: special.2009.11.20

The thermos, with the lid on top, It's not a open system your coffee is going to stay warm or hot in the thermos.

顶部盖了盖子的热水瓶，不是开系,你希望你的咖啡在热水瓶里面保持温暖,或滚烫。

麻省理工公开课 - 热力学与动力学课程节选

These include food,emergency medical supplies and extra clothing to stay warm and dry.

VOA: special.2011.01.11

This allows the water to stay warm for a long time.

VOA: special.2009.04.20

Today we talk about how to stay warm,dry and safe.

VOA: special.2009.12.23

In gloves,the fingers are separated, so the hands may not stay as warm.

VOA: special.2009.12.23