Colors:Black,Navy blue,Brown Composition:58% Viscose, 28% Nylon, 14% Spandex Product Introduction：This pair of trousers is equipped with graphene-lined knee pads. The graphene inner warm fiber features low-temperature far-infrared function, integrating antibacterial and bacteriostatic, anti-ultraviolet, anti-static effects, and is known as "the epoch-making revolutionary fiber". The high-elastic and soft knee pad material ensures no tightness when worn, and the inner layer of the knee pad does not stick to the legs. It can be matched with suit jackets, sweaters, and jackets. With warmth and comfort, the appearance solves the three-pronged problem of keeping warm while maintaining elegance in winter business occasions.