They SAID it would fit up to a 16" mattress but the seam is only 13". I had just bought a new mattress so I wanted to be sure it fit. If it didn't, I'd simply return it. Then I thought to just find the seam and measure it. I had to unfold the entire sheet set to find the seam in the middle and when I found out it wasn't at all what they promised, I was mad at having to fold it all and try to get it neatly back in the pkg. I decided to let WalMart have that duty and will be returning it ASAP. (Sorry, WM employee!)
I don't blame WalMart and I was grateful the package got here so quickly but my new (GIANT) mattress had arrived that day and was already on my bed so I was tired and frustrated with the company, Lux Decor, for lying about the size.
For those of you just scanning, these are NOT as deep as they said. It MIGHT fit a 12" mattress but when you see the 14" in the picture I plan to include, remember that a part of that HAS to to UNDER the mattress so BUYER BEWARE.