The lower bed is available in one size 90x190 100x200 cm. The mattress used has 100x200x24 cm, it fits, but when pulling it cracked several times, even though I've tried it carefully. Those were probably broken threads and one had already tense arg to it to get around the corners. It is advisable to bend to 45 degrees (which I have not done first) necessarily in raising the lower bed, the mattress in the middle. Otherwise you have to reckon that the tearing tension border, the rubber is but around the corners it fits. The chip boundary overlaps the mattress below not lush. She goes sufficiently aware of the corners but in mattresses center is the rubber on the mattress edge. That could be more spacious and more elastic. What a nonsense with the universal size, does not fit is not perfect for the one and the other probably.
The edition covers but good mattress surface. For mattresses mid missing on respective sides maybe 2 centimeters and the padding and quilting is fine. Goods will be the price, 40% discount as advertised would result in 39.95 Rate at which it would no longer be appropriate in my opinion. I can compare it with an old sub-bed that was more expensive. In this example, the edging rubber wider and the stitching is more complex. A daring advertising with the supposedly lowered price.
I do not know whether there are better alternatives with a clamping rim for that price. Return do not do ego, this model is useful, you have to fumble it halt it, with large and thick mattresses. To give four stars I am unhappy, say three and a half, good to satisfactory.