Had it on my bike one winter. Guess the gel froze in the cold or something, because the whole saddle swole up like some tumor. Still worked though. Then along came summer, and one hot day the "skin" of the saddle burst and the once frozen, now overheated, gel started falling out of the saddle in bright lime-green chunks. This stuff is incredibly sticky, it's all over my bike now, and I'm pretty sure it will give me a tumor too. Horrible saddle really.