Review on Enhance Your Knitting & Crochet Projects with 9 Pack Blocking Mats, 200 T Pins, and Storage Bag (12.5 in) by Carol Miller

The lines are jagged when composed. The mesh blanks are about 1 1/4" or 3 cm each. I have no idea what measurement system they found this useful for. Otherwise they are thick and sturdy. They are about 3-4 times thicker than the baby mat that I have used.No more need to pierce the rug.If you just need a decent rug this was a good price for the durability.If you want a mesh that suits your job keep looking.