Three mats came in a package and I used a 50% off coupon at micheals for it. They have hardware to join them but I figured that they would get in the way. so they are just sitting on the table, They are marked in sequence. Though I usually don't use those for quilting, when I am doing something like curtains or something they come in very handy. I have a 4th board on the end as well. It being a 4x8 table there is a lot of room to spread things out on it. Though there wasn't room to fit the whole quilt out on it but at least there is enough room to get a good idea what it will look like without having it on the floor. The floor in here is always dirty, I can't seem to keep it clean no matter what I do to it.