It’s taken us two goes to get the right topper. First, we tried a Vango SIM. Fine, but not great and a bit of a pain to roll up. i wasn’t keen on the poly cotton covers on Duvalays and so, finding myself in Dunelm, I bought a 135cm cotton mattress topper for about £35. It’s great! Quite soft, easy to roll up and not too bulky. And not expensive. Ask ten people and you’ll find twelve answers, so you have to take a gamble and be prepared to get it wrong....