Air VentsSingle, small double and even double mattresses are good if you are not sharing. The side support is lacking a bit, too, owing to the thickness (or lack thereof). Delivery costs are not refunded, a small fee may be charged to cover the cost of collection only. This works well, in my opinion, because the carbon fibres create a barrier which prevents the dust particles in the air from entering the mattress composition. Dormeo Silver Plus Memory Foam Single Mattress. Of course it’s not hard to tuck in the sheets underneath if that’s the case – but food for thought…. I have been told that Dormeo are made in a factory outside Bucharesti, Romania. 4.8 out of 5 stars 16. You will find that it is 8 times more breathable than traditional memory foam mattresses enabling you to have a fresher night’s sleep. But of course more layers means a higher price; this Dormeo often retails for way less than £300. Best Buy!