What is the best glove to wear at MINUS 40 degrees?

1, down gloves: down gloves are made of high-quality goose or duck feathers, which have good thermal insulation performance, and are suitable for use in extremely cold weather, and can provide long-term thermal insulation effect.

2. Wool gloves: Wool is a natural warm-keeping material, which can effectively prevent heat loss. Wool gloves are soft and comfortable and can be reused. It is an economical warm choice.