Closet Core Jasika blazer

Difficulty: Advanced · Sizes: 0–20

Jasika from Closet Core is a classic tailored blazer with a semi-fitted shape that skims the body. The instructions use modern speed-tailoring methods, fusible interfacings and minimal hand sewing, making this a rewarding project for building tailoring skills.

Design details and options

• Fully lined, with a classic notched collar and single-button closure.
• Back vent, shoulder pads, welt pockets and two-piece sleeves.
• Optional pocket flaps, topstitching, decorative sleeve cuff buttons and leather or suede elbow patches.

Recommended fabrics

• Jacket body: medium- to heavyweight suitings or lightweight coatings with surface texture, such as wool melton, wool flannel, crepe and tweed. Velvet, medium- to heavyweight cotton, seersucker and linen may also be used.
• Tightly woven, smooth-surfaced suitings such as wool gabardine are not recommended, as they can be difficult to fuse using an iron.
• Lining: rayon Bemberg, charmeuse, crepe de chine or smooth, silky cottons such as voile.
• Pockets: sturdy cotton such as shirting, quilting cotton or muslin, 1/4yd / 0.25m.

Notions and tools

• Polyester thread
• Cotton stay tape: 6mm wide, 2.4m
• Shoulder pads: 6mm thick
• Sleeve heads, or lamb's wool or cotton batting cut into bias strips
• One 19mm button and one clear button
• Tailor's chalk, hand-sewing needles and thimble
• Tailor's ham, seam roll and press cloth
• Pinking shears
• Point presser or wooden clapper

Optional finishing supplies

• Leather or suede for elbow patches
• Six 16mm buttons for decorative sleeve buttons

Fabric requirements

45in / 1.14m-wide fabric

• Jacket body: sizes 0–8, 2.5yd / 2.3m; sizes 10–14, 2.75yd / 2.5m; sizes 16–20, 3yd / 2.75m.
• Lining: sizes 0–8, 1.5yd / 1.4m; sizes 10–20, 2.25yd / 2m.

58in / 1.5m-wide fabric

• Jacket body: sizes 0–8, 1.75yd / 1.6m; sizes 10–14, 2yd / 1.85m; sizes 16–20, 2.25yd / 2m.
• Lining: sizes 0–14, 1.5yd / 1.4m; sizes 16–20, 1.75yd / 1.6m.