Blue Semcycle deluxe air seat for sale. I can sent the original padding with it too. It comes with a 300mm seat post, but the post does not have holes in it to use with a Semcycle Deluxe unicycle. The post is a 22.2mm diameter.
$40 or best offer plus shipping.
Pix can be seen at http://www.unicycle.com/shopping/shopexd.asp?id=239
The price for a new seat at unicycle.com is without the post, the posts are 13 dollars new.