SM-01 silicon-containing hollow shaped fiber uses advanced spinning technology to create extremely delicate fibers, and its cross-section is carefully designed to be hollow. This design not only greatly reduces the weight of the fiber itself, but also forms a natural air layer inside the fiber, effectively locking in heat and keeping warm. SM-01 silicon-containing hollow shaped fiber can store more air in a very small volume. Air, as the thermal insulation medium, effectively blocks the invasion of cold air from the outside and reduces the loss of heat from the human body. The specially added silicon-containing component gives SM-01 fiber moisture absorption and perspiration performance. It can quickly absorb excess moisture on the skin surface and quickly drain it out through the microporous structure between the fibers, keeping the skin dry and comfortable, and keeping it fresh and breathable even in a humid environment. SM-01 silicon-containing hollow shaped fiber blended with natural fibers such as cotton and wool is a fusion of technology and natural warmth. The autumn and winter warm clothes and casual wear made from it not only retain the softness, skin-friendliness and breathability of natural fibers, but also give the clothes warmth retention performance and fashionable appearance to meet the personalized needs of different consumers.