The 40 wt Aurifil Color Builders Thread Club includes 3 large spools of 40 wt Aurifil thread and a free foundation paper pieced pattern each month. This is a bundle of all the fabric needed to make the 16" x 16" block in the colors chosen by designer Cassandra Beaver. If you doing a one time purchase please let us know in the notes when you check out which month's fabric you would like to receive.