[Unique Carbon Fiber Grain] It's not a carbon fiber fender, but pressed with carbon fiber pattern. Non-toxic PP engineer plastic material is very lightweight but can be suffer in high temperature,long -lasting exposure and can be folded many times. [Durable and Flexible] Nicedack bike fender is 0.8mm thickness, super tough but flexible enough to get it to fit for most mudguard mountain bike. [Difficult to Glide] Four points are fixed to avoid sliding, and the shape is beautiful. More holes than normal bike fenders for easy adjustment and fixing. After fitting the mudguard, make your bike look very cool. [Free to Adjust] Different holes can be selected according to the bicycle frames, thus NICEDACK bike fenders can be perfectly fixed on your bicycle (applicable front and rear). Can protect your fork and bridge from agglomeration, reducing the need for cleaning and maintenance.