EN 17092 certification is a European standard that sets out the requirements for protective clothing for motorcyclists and divides them into several classes according to the degree of protection. Class C, designated as EN 17092-5, is a specific category focused solely on impact protection. Clothing certified in this class, such as a motorcycle shirt, is designed only as a carrier for joint protectors such as shoulder and elbow pads or back protectors. However, the material of the shirt itself does not provide any proven resistance to the punctures that occur when sliding on the road. This type of clothing is designed to be worn under another layer of clothing that is not fitted with protectors to give it the ability to absorb impact. In practice, this means that only the embedded protectors provide protection, not the fabric of the shirt itself.