I have a relatively hard and very high mattress the Sultan Heijdal a slightly larger Swedish "furniture store" and had to sleep in a little trouble lately. With this document, I must honestly say I penne away within seconds. The rubber grommets at the corners are very generous of the reach and may also include very high mattresses. The pad itself is nice and soft and a good contrast to my somewhat hard mattress. Really a bargain for the price of 34. I am excited about the underbed point