What is the name of the cotton shoes that can be put on shoes outdoors in Northeast China

Northeast snow cotton. Northeast cotton shoes worn outside like the snow to write poetry of the kind of cotton shoes is called the name of the Northeast snow cotton. Snow cotton is a synthetic fiber material, snow cotton, also known as snowflake fleece, Oren fleece, is more than 85% of acrylonitrile and the second and third monomer **** polymer, after dry spinning or wet spinning made of synthetic fibers.