There are a few mats like that; I have two different sizes. They are great especially when trying to do triangles or any shape that you really need it to be accurate. I love my Accuquilt go but the mats are really a helpful hand as well. It's a good choice. Look for coupons; I just got the latest Joanns and Hancocks in the mail. I try to go to Hancocks on Wed because the 1st and 3rd Wed are senior discount and you don't have to be 60 and it's on top of any other discount or coupon and the 2nd is military discount so for them I have most of the month covered. Enjoy your mats