Tinyspool & Co. Jelly Roll Fabric Strips for Quilting, Crafting, and Sewing, 40 Strip Assorted Bundle, Soft Cotton for Blanket, Rug, Upholstery, Home Decor, and Purse Making, Fall Harvest Tinyspool ...

According to My Favorite Quilt Store, a jelly roll consists of many strips of fabric. Each strip is 2.5 inches wide and between 44 and 45 inches long. There are usually around 40 strips in a roll.