Often referred to as "Layer Cakes," these great packs are made of collections of 10" square cuts. These are going to help you get right to the sewing part and skip some of the cutting. For those of us that have limited time but want to make every quilt ever known to mankind, (overkill?) these are a super helpful tool! There are oodles of Youtube tutorials out there with ideas of what to make with these as well. I like to get the black, or white layer cakes to use for my background fabric.