Bought this for my other half but it seems it is not to her liking. Its been mounted on the bike and ridden about two miles and thats it so its as near new as you are ever likely to get. It has the air bag inflated with a small pump under the nose of the saddle so you can vary the pressure to alter the comfort level. There is also a bracket built in for some of the topeak saddle bags.This looks as though it could be removed if you wished to use a different system. An expensive bit of kit. Yours for £30.00 posted