Practical Art Fusible Flats: Boy, Dog, and Clothes panels. Fusible panels of printed interfacing to make adorable, flat (approx. 11") doll with interchangeable features. 1, 12" x 18" printed, fusible interfacing panel per pack - 1 doll, and 1 Clothes panel. If this is your first time making Fusible Flats, we recommend to purchase the Fusible Flats Fun Pack first, complete with colorful detailed instructions and interfacing.