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11942 knee guard products are offered for sale by suppliers on Alibaba.com, of which elbow & knee pads accounts for 51%, fitness safety accounts for 12%, and knee sleeve accounts for 1%. A wide variety of knee guard options are available to you, such as professional protection, basic protection and comprehensive protection.You can also choose from sports protection, wear-resistant and warm knee guard,as well as from polyester, pp, and sponge knee guard, and whether knee guard is breathable, comfortable, or high elastic.