The fenders are light and move quite a bit when riding. They do provide protection but the rear fender doesn't work well if you put on an ABUS lock. I LOVE my turbo Como but wish you didn't have to cut off the fender from the seat stay to the seat tube when you put on a cafe lock. The fender won't go through the ABUS lock. It then leave the chain ring and bottom bracket exposed to dirt from the rear tire. Not what a fender is supposed to do. I have sent a few emails to Specialized asking for a work around or another product that fits under the lock but so far..........crickets........Specialized engineering is top notch in my opinion. This is unusual for them.