KNOX 55 has been specifically designed to protect your knees and shoulders – these delicate areas are particularly vulnerable in case of a collision and require extra protection. The high shock absorption of this product helps to minimize the impact in case of a crash or a fall. Movement and flexibility are extremely important when riding and are in no way compromised when wearing this protective gear. This product is comfortable and barely noticeable under your riding clothes, we recommend wearing it regularly for increased protection on the road. 2 piece set.