Includes 3 each of 12" x 12", 12" x 18", 18" x 30" and 20" x 20" as well as 2 each of the Fuse & View Ironing Board Covers. Silicone mat for fusible appliqué and for use with hot glues. Mats are transparent to allow for perfect placement. Tacky surface holds pieces in place. Works with temperatures up to 420 degrees Fahrenheit (220 degrees Celsius). Easily clean with warm water (air dry) or just put it in the dishwasher.