Topeak DeFender XC11 (27.5-inch/650B)

Topeak's DeFender XC11 for 27.5-inch wheel bikes is a rear fender that offers durable rain and mud protection on wet and sloppy rides. The quick-release seatpost attachment allows the DeFender to be installed and removed in seconds and the angle is adjustable for the perfect fit. It's incredibly light, too.