I have two of those mats that Skyler is talking about on the bench. They are great too. I use the grids and the premarked rulers all the time. I do all my roller knife cutting for chap work on those things but I can't use a roundknife like Skyler does on em, I get stuck. Literally I get the blade stuck in the mat. Must be me cause I have several friends that are full time leather craftsmen (and use my roundknives) and thats all they use is those mats. I can't use the white poly boards either, get stuck in them too. I've got a piece of hydroma 18"x24" that I move around on the workbench on top of the mats. It handles all roudknife cutting and punch work. I find that my roundknife will cut through the leather and then kinda skate across the hydroma and that works well for me.