GradeThread

Grading a used blazer

Grading a used blazer is a tailoring inspection. The grade leads with the structure buyers can't easily fix — shoulder shape, lapel roll, and the canvas — then weighs elbow shine, lining sweat stains, and button integrity. A blazer with a clean shell but bubbled fusing or a shiny seat grades down fast.

What to check

  • Structure: shoulder shape, lapel roll, and no bubbled fusing
  • Elbow and seat shine from abrasion on worsted wool
  • Lining condition — sweat stains, tears, vent separation
  • Buttons present, matching, and functional (including cuff)

How to grade it, step by step

  1. 1

    Assess the structure

    Check that the shoulders hold shape, the lapels roll cleanly, and the chest hasn't bubbled where fused interlining has delaminated — bubbling is a major, unfixable flaw.

  2. 2

    Look for shine

    Angle the elbows and seat to the light. A shiny, worn sheen on worsted wool signals heavy wear and lowers the grade.

  3. 3

    Check lining and buttons

    Inspect the lining for sweat stains and vent tears and confirm every front and cuff button is present and matching.

Graded examples

GradeWhy
9 (NWOT)Crisp structure, no shine, flawless lining and buttons.
6 (Good)Light elbow wear, clean lining, all buttons matching.
3 (Poor)Bubbled chest fusing and shiny elbows — structurally tired.

Every grade sits on the GradeThread 1.0–10.0 scale.

Flaws to watch on this garment

Frequently asked

What is fabric bubbling on a blazer?
Bubbling is when the fused interlining inside the chest or lapel delaminates from the outer wool, leaving rippled, blistered patches. It usually happens after dry-cleaning or moisture and can't be pressed out. Because it's a permanent structural flaw, bubbling drops a blazer's grade sharply even when the fabric is otherwise clean.

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