Carter's Fitted Sheets: Elastic all around or just in corners?

Baby Bargains gives Carter's a B+. But neither the book nor the Babies R Us website where these sheets are available specify whether the elastic goes all around the sheet or is just in the corners? I assume it does since BB gave them a good rating, but I hope someone who knows can confirm this, please? Thank you!

Mine have elastic all the way around and they are fine. However, they are a pretty tight fit and sometimes you have to fight with them to get them on a coil mattress.