PP material, high elastic, wearable and durable. Bike fender is light weight, not broken and rusty. Front length: 31cm, back length: 53.5cm This fender bike is compatible with 20"/22"/24"/26". Suitable for most types of bikes, such as MTB, road bike, city bike, etc. But can't fit the bike whose rear bar diameter is less than 22mm Easy to install and remove - Easy to install the bike mudguard (make sure your front fork has a hole, the seat post is a circular tube). With our mudguards mountain bike you can adjust the angle between Adjust fenders and bike tires flexibly without the need for repair tools 2 piece fender - The fender with 2 main parts. Bike fenders can prevent splashes and flying debris from the front wheels and keep you and your bike clean, which is available for most bikes The mudguard set reduces the cleaning and repair time of the bike. It protects your bike's fork rods and bridge from dirt and debris, saving you time from washing your bikes every time after riding in the rain. The angle between fender and bike tire is adjustable. It is good for reducing wind resistance when driving on a muddy road The mudguard can prevent spatter and flying debris from the front wheels, keeping you and your bike clean and available for most bikes. You can flexibly adjust the angle between the mudguards and the bike tires. Front Rear Mudguards Note : Please allow 1-3cm difference due to manual measurement and slight color variation for different display setting.