This acrylic set is specially designed to help you build beautiful applique, or other sewing and craft projects with ease. Made from durable 3mm acrylic they are ideal for using with a small rotary cutter to achieve smooth cuts. The addition of the seam allowance line around the edges helps to visualize exact placement for fussy cutting your beautiful fabrics. Several shapes have additional lines that you can align to the fabric's edge in order to make a smaller/shorter shape, or move to the fabric's foldline in order to create a symmetrical shape for loads of variety. This set matches the shapes found in three of my quilt patterns: Cross Country; Plot Twist; and Safe Passage. The companion In Bloom Mylar Template Set is created with no seam allowance and is perfectly paired with this set to help trace fold lines or press fold lines for needle turn applique.