Tired of sitting at the office with a wet ass all day just because it rained this morning? Not ready to bike in a wet suit or burden your bike with fenders? Relax. We got you covered. The SmartAss fits nicely onto the rails of your saddle without any tools or fittings. When it stops raining, simply fold it up and store it underneath your saddle. The SmartAss fits about 80% of all standard rail saddles. Please note that although very useful and highly appreciated, the SmartAss is an emergency fender and that it doesn’t have the same efficiency as a full fender.