BUTTERICK B7063 is a paper sewing pattern for semi-fitted open-back knit jumpsuit pattern. It includes elastic waist, patch pockets, stitched facings, length variations and long-sleeve or sleeveless options. Size range: XS-S-M-L-XL-XXL. Suggested fabrics: Stretch Knits only such as: Cotton Knit, French Terry, Lightweight Sweatshirt Fleece, Velour. See Stretch Gauge. Contrast: Jersey. Interfacing: Fusible Tricot. Sewing rating: Easy.