Review on Optimized Search: Knit Picks Mat for Blocking by Sasha Hsiao

Locking can be done in different ways. I would imagine these rugs would support all of this as it doesn't say so in the product description. I called KnitPicks and the rep said they ARE NOT SUITABLE FOR VAPOR BLOCKING! :(They make a good wet block. I've used them and they work well, easy to assemble and disassemble and stay in place. Takes pins well. They show small holes from the T pins and fork pins, and so let's assume that over time they have too many holes to use Pins not included Not thick enough