Seats provide great padding for your bottom and back. The back support is wonderful and a must have for touring. The portage strap holds the folded seat secure so you don’t have them blocking your vision and don’t have to remove during transporting. Straps hold seat to canoe seat pretty well. They do loosen up over time and pressure and need re-tightening too often. A better teeth to strap on the buckle would be a nice improvement. They also make and sell strap extensions which are available on their website to accommodate custom or non standard seats. I needed them for my cane seats.
