Ok so having camped with Rick and seeing his insulation thing he Made for his poptop i have decided to have a go . i had a £4.99 roll of insulation from B n Q which isn't quite wide enough but the difference in price between that size and the size which will do it fully is massive - £4.99 0r over £50 - made me improvise . This - tools - scissors and ali tape about £4 from B n Q. i wrapped it around the poptop for fit first of all -- it was short in height . marked it and cut trimmed to fit it's a tight squeeze at the hinge end Now i have to cut the top bits out and and tape them together , i will update later , meanwhile i hope it gets you thinking of doing one yourself