"We went Sydney-Hong Kong and Hong Kong-Heathrow. I bought two for our 7 and 4year old and also one for myself. In the UK now (Scotland.. it’s freezing haha) the Fly LegsUp were awesome and kids were super comfortable as was I. Good luck with your trip...I quite often get really bad swelling from flying even just short distances, I had no swelling at all on our leg from Aus-London. I will have to book another trip soon just so I can use them again haha. Thanks"