Hyperion is a fabulous block of the month, click here for details and to sign up! It uses this collection of gorgeous fun Riley Blake Expressions Batiks featuring the Polka Pop collection. This bundle includes 15 fat quarter, 1 of each fabric used in the quilt. So this bundle is perfect for making coordinating projects, or to have some extra insurance fabric when making the quilt. It is also just a wonderful bundle of fabrics with endless possibilities! This beautiful set includes 15 Fat Quarters ( 18" x 22" ) from Riley Blake Expressions Batiks featuring the Polka Pop Collection. *The polka dot fabric in the bundle is the same that is in the kit. Riley Black released the polka dot fabric in two collections, one named Neon Pop with numbers BT23052 and one named Polka Pop with numbers BT21400. So those numbers are interchangeable, so if your pattern says BT21400, it is the same as the BT23052.