Hi there Your site is extremely informative – brilliant. We are trying to get a more comfortable mattress for the fixed bed in our caravan (it is an ‘inner spring’ model but feels like an unsupportive brick). We have tried various toppers – we have a full size 5cm deep 60kg memory foam topper and also some single size toppers in 55kg and 60kg memory foam – neither really help on top of a mattress that is fundamentally cheap. Both my husband and I like a soft feel mattress but with some support (we are 10st and 12st respectively). We recently slept on a KoseeSleep Countour Supreme mattress at my sister’s house and were astonished by how comfortable it was when we found it was just memory foam on top of a reflex foam base – far more comfortable than most sprung beds we’ve slept on. KoseeSleep are discontinuing the mattress – I phoned and of course they don’t make caravan mattresses. I asked about the density of the foams and they told me that it has ‘550’ memory foam but didn’t have the spec of the reflex foam. So my question is do you make mattresses for a caravan fixed bed? I think your Genesis looks closest to the KoseeSleep – weight is an issue in the caravan and I would need to know the total weight of a double mattress. Thanks for any advice you can give, Lesley >