the full name of sherry cotton is 3M new sherry efficient warm cashmere. 3M new sherry high-efficiency velvet is a registered trademark of 3M company. It is one of the brands of thermal insulation materials, and puts forward the concepts of lightness and warmth, so sherry cotton is not cotton but a synthetic thermal insulation material. 3M new Sherry high-efficiency warm velvet was born in the United States in 1978. It was designed and developed for the warm clothing of the US Marine Corps, and entered the life of the general public in 1988.

Sherry cotton has a very good warm-keeping effect, and its warm-keeping principle is actually very simple. All thermal insulation materials rely on the air retained in their fibers to keep warm. The more air retained in the fibers, the less heat loss conducted, and the higher the thermal insulation efficiency of the materials.

in addition, in the same space, the more fibers, the larger the insulation layer formed by the surface area of fibers to block heat radiation, and the warmer the material. The new Sherry is composed of superfine fibers patented by 3M, and its fineness is only one-fifth of that of hair, which means that they can be filled with more fibers in the same size space, and at the same time reflect more human radiation, so they are very thin but warm.