I ordered these because I have a 15" mattress plus a pretty thich mattress pad, and many fitted sheets I've bought are so tight to the fit that it takes me half an hour to change the sheets, and I've broken a lot of nails pulling the corners down.  Not these-- they are almost too deep!n  But work just fine.  The are true sateen Egyptian-Quality Cotton, so they are a little better at resisting wrinkles, which was important to me.  Very satisfied with the set.