I bought this to use on my T7 lowered seat for the motorway miles on my way to Portugal. I took it off to ride the ACT and although it was a faff to deflate, it rolled away reasonably well and strapped to the top of my luggage no problem. I decided to ride the last motorway day without it and my ass was in bits by the end of it! So I guess that proves how well it works, because before that, I was totally fine. Kind of feels like sitting on a big titty, which takes a bit of getting used to but it absolutely works.