Denim fabric guide
Denim Blazer Design with AI
A denim blazer is a specialist order: ask for rigid denim at 300 to 400 g/m², and expect fewer mills to take it on.
Of the 12 cloths this guide lists for this cut, it sits between ponte di Roma and scuba knit in weight.
Next to ponte di Roma, it is heavier, firmer and less stretchy.
Studio films
Denim Blazer at a glance
- Cloth to ask your mill for
- Rigid denim
- Typical weight
- 300 to 400 g/m²
- Drape
- Structured, holds its own shape
- Stretch
- Slight
- Breathability
- Medium
- Warmth
- Neutral
- Care
- Machine wash cold, inside out
- How common
- Niche, usually a specialist order
- Typical cloth price
- $8-30/yard
Typical trade ranges, not one mill's figures: confirm them with your mill.
The blazer, in numbers
- Typical length
- 70 to 78 cm, from the high point of the shoulder
- Defining details
- Notch or peak lapel, two-button front, flap or patch pockets, back vents
- Cloth needed
- about 1.8 to 2.2 m of 150 cm cloth, roughly $16 to $72 of cloth at typical prices
Typical figures for an adult size M. The pattern tier is set from the real piece count when you order.
How denim behaves on a blazer
In a blazer it holds a strong shoulder and a straight front almost without help from the canvas.
At this length a structured cloth holds the shape of the pattern from top to hem.
It is neither warm nor cool, so it works across most of the year.
Wash it cold and inside out to keep the color.
It fades where the body creases, and rigid denim shrinks unless it is sanforised, so the mill's shrinkage figure belongs on the spec sheet.
About denim
Denim is a cotton twill woven with indigo-dyed warp yarns and an undyed weft, which is why it is blue on the face and pale on the back. Its weight, in ounces per square yard, decides how it wears.
Selvedge denim from narrow shuttle looms is a specialist product, made notably in Japan, Italy and the United States; most denim comes from wide looms in Turkey, Pakistan, India and China.
It is almost never lined; seams are flat-felled or bound so the inside looks finished.
Cutting, sewing and color
A 100/16 or 110/18 jeans needle and a heavier thread; flat-felled seams and bar tacks at the stress points.
Indigo is the classic dye, and washes from rinse to bleach change the shade after the garment is sewn.
Its surface is matte, so it photographs evenly under flat light.
A description to start from
A blazer in rigid denim, 300 to 400 g/m², with a structured drape and a matte surface, for most of the year.
If denim is not quite right
- Lighter: Jersey, in ponte di Roma
- Heavier: Neoprene, in scuba knit
- Warmer: Velvet, in cotton velvet
Also: how the studio works, prices and questions and answers.
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