The use of graphene heat storage technology can block the invasion of cold air on the knees and have a good warmth effect. This series of products adopts optimized graphene aqueous dispersion formula and weaving process to keep the material flexible in extremely cold conditions, while achieving non-degradation after 50 washes, and high-elasticity soft knee pad material, the upper back is not tight, and the inner layer of the knee pad does not stick to the legs. It can be worn with a suit top, sweater, jacket. Warmth and comfort, the three problems of appearance are three-pronged, solving the need to maintain demeanor in winter business occasions.