The Radon pants from Alpinestars are a pair of single layer riding jeans that are designed to look like regular jeans while off the bike. Overall construction is primarily cotton with a small percentage of elastane to aid in stretch. Abrasion resistant materials are found in the impact zone around the knees where Nucleon Flex Plus armor is included, and pockets are included for the hip armor that needs to be purchased separately. Overall it looks like protection and abrasion resistance is pretty minimal in these jeans as we can not see any signs of materials such as Cordura, Kevlar or others that are typically interwoven in riding jeans to provide abrasion resistance, and with only a polyester liner in the knees and not in the seat we have our concerns. Overall at the price point there are better protection options available but some will chose these pants for the look and style.