Features:The thermal underwear set has five sizes and multiple colors to choose from. Materials: polyester fiber 77.2%, viscose fiber 12%, spandex 8.2%, sheep wool 1.5%, mulberry silk 1.1%. Silk skin care, cashmere skin care, warmth storage, skin friendly comfort, wind and cold resistance, double warmth, seamless, lightweight warmth, simple round neck to modify the body shape, soft without burden, three-layer structure, more powerful warmth, compression of the interlayer, forming an air layer between the fabrics, temperature locking and warmth without bloating, using compact spinning process, not easy to pilling.This is one of the best gifts for friends and relatives.Notice1. Please remember that there will be some small differences between the color of the picture and the actual object due to lighting effects, brightness / contrast settings of the display, etc. Measured by hand, the deviation may be 1-2 cm.