Jelly Rolls are a type of pre-cut fabric bundle that’s been increasing in popularity in recent years. This type of bundle usually includes 40 pieces of coordinating fabrics cut into 2.5” x 42” strips. They are called Jelly Rolls because when you buy the bundle, the strips of fabric are typically rolled together, resembling a pastry. There are many types of quilts that use a large number of fabric strips, so for that type of quilting project, a Jelly Roll is a huge time-saver.