Tired of sitting at the office with a wet ass all day just because it rained this morning? Do you live in a climate where a shower can come out of nowhere even though the sun was shining just a minute ago? Not ready to bike in a wet suit or burden your bike with fenders? Relax. Its finally here.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 until next time. The SmartAss fits about 80% of all standard rail saddles.Please note! The SmartAss will not fit Brooks saddles.