How to make a factory-ready tech pack for suits and blazers

What goes in a suit or blazer tech pack

A tailoring tech pack is the manufacturing blueprint for a structured jacket — a suit coat, blazer, or sport coat. It carries the standard backbone (flat sketch, BOM, graded points of measure, construction notes, colorways), but the document is dominated by internal structure the eye never sees on a finished garment — and that the factory cannot guess from a front-view photo alone.

The single most important call is canvas construction. A jacket can be fused (interlining glued to the shell), half-canvas (a floating hair-canvas chest piece from shoulder to mid-chest, fused below), or full floating canvas (hair canvas running the entire front, pad-stitched by hand). That one decision changes the lapel roll, the drape, the price, and the labor hours — full canvas is more expensive mainly because of the hand sewing a skilled tailor puts in. The pack then specifies the lapel roll line and its pad-stitching, shoulder padding thickness, the lining (Bemberg/cupro is the industry default), functional or sham sleeve buttonholes, the vent style, and pocket type. Get the canvas or roll line wrong and the first sample bubbles at the chest, the lapel lies flat instead of rolling, and you pay for another round at $200–$1,500.

Suit & blazer tech pack: what each section needs

Construction terms per Gentleman's Gazette and Oliver Wicks tailoring references; stitch/seam classes per ASTM D6193; grading basis ASTM D6240.

Worked example

Why tailoring packs differ from soft apparel

A tee or hoodie is mostly shell, thread, and labels. A tailored jacket is a layered assembly — shell, canvas, padding, lining, and felts — and most of the spec describes parts the customer never sees. The canvas decision is the spine of the document. A fused jacket lies flatter and risks "bubbling" if the glue degrades in dry-cleaning; a floating hair-canvas chest piece is pad-stitched so the lapel rolls softly and the chest molds to the body over time. A photo shows the outside; the pack has to declare the inside.

The lapel roll line is geometry, not decoration. Pad-stitching uses shorter, denser stitches right along the roll line and at the lapel corners to set the curve — so the pack specifies pad-stitch placement and density, not just "add canvas." Shoulder expression and lining are spec lines too: pad thickness, sleevehead roll, and whether the jacket is full/half/quarter lined in Bemberg cupro all get stated. And grading is unforgiving — tailored jackets grade against a men's body standard (ASTM D6240, chest 34–52), where chest and waist circumferences grade larger than shoulder and neck because the body doesn't scale uniformly. A generic apparel template has no field for canvas, roll line, sleevehead, or vent — which is exactly the gap a class-aware generator closes.

Generate a tailoring pack in 3 steps

1. 1

   Upload one photo

   Flat-lay of your blazer, a dress-form shot, or a clean mockup — ideally with a front and a lapel/inside view. The AI detects the tailoring sub-class (suit coat, blazer, sport coat) and the structured construction it implies.
2. 2

   Review the tailoring-specific draft

   In 3–5 minutes you get the flat sketch, a BOM pre-populated with canvas, lining, padding, and button components, tailored graded POMs, and roll-line/vent/buttonhole callouts. Spend 15–20 minutes confirming the calls only you know — fused vs half vs full canvas, pad thickness, working vs sham cuffs, lining yardage, and your sample's exact measurements.
3. 3

   Export and send

   Print-ready PDF (Excel/CSV on Pro) to your tailoring factory. Total cost $3–6 — versus $150–$500 and 3–7 days for a freelance technical designer, per published rate surveys.

Built for tailoring and suiting founders

This is for the founder launching a suiting or blazer line without an in-house pattern-and-tailoring technician: you've sourced a wool, sewn a sample, and need a document a tailoring factory will quote from — without $150–$500 per style in freelance fees or the long Illustrator grind drawing a jacket flat with every internal callout. It fits made-to-measure and slow-fashion suiting brands scaling small structured collections, production leads cutting first-sample revision rounds on jackets (the most construction-heavy garment), and e-commerce menswear and womenswear tailoring stores moving from import-and-rebrand to true cut-and-make.

Adstronaut writes the canvas-construction callout, lapel roll line, shoulder and lining specs, buttonhole and vent details, and tailored measurements graded to a men's body standard — so your factory in Porto, Istanbul, Naples, or Guangzhou receives a tailoring-grade pack, in minutes. The same backbone handles softer structured pieces too: see the broader jacket tech pack guide for outerwear, or the activewear use case at the opposite, fully-stretch end of the spectrum. When the samples come back, AI Photoshoots handle the on-model imagery the same week.

Frequently asked questions

Generate your suit or blazer tech pack

Upload one photo of your blazer or suit coat. Get the canvas-construction callout, lapel roll line, shoulder and lining specs, buttonhole and vent details, and tailored graded measurements in minutes. First pack free, then $3–6.

Keep going

Sources and further reading

• Gentleman's Gazette — fused vs half vs full canvas construction — canvas types, bubbling on fused jackets, pad-stitching and lapel roll
• Oliver Wicks — half vs full canvas suit construction — half-canvas chest piece extent, full-canvas labor and drape
• Poppykettle — pad stitch tutorial — hair canvas (hymo), denser pad-stitches along the roll line and lapel corners
• Senszio — Bemberg suit & jacket linings — Bemberg/cupro as the default breathable jacket lining
• ASTM D6240 — body measurements for adult males — chest 34–52 Short/Regular/Tall grading basis for men's tailoring
• Gentleman's Gazette — anatomy of a suit jacket — lapel types, vents, functional buttonholes, shoulder and lining terms