The film explains the Circulator seat and backrest pads as an extra layer for warm-weather riding. Their three-dimensional construction encourages air to move between the rider and seat, helping reduce heat and perspiration build-up while adding some shock absorption. The low-profile design is intended to make only a small change to seat height. The UV-stable material helps resist fading from sun exposure; these are comfort features, not a temperature-controlled seat.
The seat pads attach with an elastic, hook-and-loop strap beneath the seat and use a non-slip base to help hold them in position. The film describes a quick installation, but the strap still needs to be secured for the particular seat. It compares a medium pad, 14½ inches wide, for the original-equipment and accessory seats of the V-Rod, XG, XL and Dyna families, with a large pad, 16 inches wide, for the original-equipment and accessory seats of Softail, Touring and Trike models. The large pad excludes Bobber, sprung and Road Zeppelin seats.
The film also shows a separate wide Circulator backrest pad. Its vinyl-and-mesh construction is intended to reduce heat build-up against the back. Elastic hook-and-loop straps, a non-slip base and fade-resistant material provide the same practical fitting and sun-exposure features. It is described for wide-profile rider or passenger backrest pads up to 12 inches wide and 9 inches tall; it is a backrest covering, not the supporting backrest itself.
The exact product currently linked here is the large 16-inch Circulator Seat & Backrest Pad listing, part 51076-10. Despite that catalogue title and the wider range shown in the film, this action identifies the large seat pad only. It does not supply the medium pad, a backrest pad or an entire seat as a set. No verified current product action is offered here for those other pads. Check the selected bike and the seat already fitted, including the three excluded seat styles, before choosing the large pad.