Foam. 10.5" wide. The Bare Bones solo seats are designed to look as thin and narrow as possible, even lower than the Silhouette solo. This gives an unbelievably sleek, low profile. Will complement the lines of every bike from stock factory to radical custom. Note: Fat Boy S models. The Barebones Solo seat for the 20-up Fat Boy S mounts with two tabs at the rear of the seat. To mount your Barebones solo seat, insert the tongue at the front of the seat into the channel in the frame, align the two tabs at the rear of the seat over the dual mounting posts on the rear fender and install the stock mounting nuts onto the mounting screws to secure the seat in place. After installing the seat, pull up on the seat to verify that it is secure.
