The perfect last minute mudguard very effective and fast fitting rearguard simply attaches the saddle rails with 2 velcro straps it takes only 30 seconds rearguard offers great protections for your rear whether your on or off road thanks to a custom thickness polypropylene rearguard is not flimsy but also offers an excellent fit unlike some guards available the tough fitting strap will work with any post including aero posts ideal for road mountain and cyclo cross bikes one size fit