Mucky Nutz Rear Fender Unique design providing full rear-end protection. Features Compatible 99% of bikes MTB Road CXAdjustable with three pitching options Attaches to seat post or seat tube and is compatible with dropper seat posts Leave it on or fold flat roll up and put it away Has a rubber foam contact to prevent slippage around the seat post Weight 75g (2. 65oz)Material Customized Polypropylene | Mucky Nutz | Rear Fender Black | Rubber