I love to ride in the rain and do not even arcs around mud or puddles. Trozdem I do not like it when the dirt is catapulted me right in front of the butt, and also the high-sprayed from the front Sch ... catch with the face I find unnecessary.
For real MTB-ler naturally frowned upon for several reasons, the fuel protectors are a real blessing for me.
One hundred percent protection against dirt splashes is not the product, on the back and on the legs still lands the odd splash. The shoes are of course not protected at all, because the splashes splashing from the tires up. (However, this can make absolutely no fender. Who expected that should prefer to drive only in dry or change the sport.)
For the wide tires on my mountain bike, the rear a small piece could have been wider. But for the price, although 5 star.