I saw an ad for these and wondered if anyone has used them.

http://www.cottagemills.com/magento/...uzzlemat.html/

That's the first I've seen them. Will be interested in the replies.

They have many uses. Great for play area in kids rooms, which is probably their intended use. Have seen them used as cushioning for floors of booths at craft shows. Also works well at the base of steps to the car when there is no sidewalk and there is mud. Can also be used with T pins for blocking knitting, etc.

I thought they were cutting mats! LOL

Me too. Aren't the other puzzle mats about an inch thinck?

I went and looked again--they are cutting mats.

They are cutting mats that you can carry places and then put them together to use. They aren't the foam ones for the floor.

Quick Overview
This easy-to-store, portable and expandable cutting mat is a great tool for any quilter!
Details

Simply snap together to make the size and shape mat you need
Use with any rotary cutter
Easy to store
Portable, expandable
Long lasting
12" x 12" mat and edges also available

(lol, these make sense now) ;)

R they self healing??

Interesting! I saw them before and was curious about them, too.