Fits mattresses with a thickness up to 10" since the fitted sheet has elastic edging.
The sample in the store led me to believe that these sheets might be quite a find for this price. The sample must have been very old and well loved. When I got these sheets home and washed them, they are so scratchy that after two nights I'm taking them off the bed and using some free sheets that came with a comforter until I can find something else. Since Ikea doesn't stand by their bedding once you open the package, I'm stuck with this clunker.