The pads mount on brackets attached to the bottom of a seat. The width between the pads as well as their interior/posterior location can be adjusted to suit the individual client. The hip pad kits include all the hardware necessary for mounting. (When ordered with a system, the brackets will be mounted) The hip pads have #10-32 fasteners for mounting brackets. The pads are fabricated from zinc plated metal and formed to maintain it shape. The metal has a 1” layer of closed cell foam and is covered with upholstery of your choice (See Upholstery Chart Below). Kits are available as a pair of for a single side.