Ordered the 13 inch rv memory foam for a truck. Best thing ever for absorbing shock and being able to actually sleep while truck is moving. Have paid more for mattresses in the past and this is a great bargain. We like the feature that you can move seperate pieces to your own comfort level. Extremely pleased that their was no ordor as some had suggested might be. Unrolled each piece and assembled in truck and allowed a couple days till we used it and it was perfect. Hope truckers will try this product. It is hard to find something so comfortable that fits truck so well. Thanks Overstock!