I need to replace mine; it's a cheapie purple one that's onesided from WalMart....had a wonderful thick green one from when they first came out but took it to work to help out with a friend's quilt---left it in the hot car---and never could get it flat enough to use again. Will definitely buy a green one (coupon at JoAnn's!) the next time. Cheapie purple has been used a lot in the past few years and is starting to show her age....