# J.Crew Ludlow Light Blue Herringbone Blazer – Modern Men’s 40R / EU 50R

- Link: https://shopquirkla.com/product/j-crew-ludlow-blue-blazer-modern-mens-40r-review/
- Published: 2026-07-03T07:55:40-07:00
- Author: russ

A modern J.Crew Ludlow blazer in a soft light blue herringbone woven fabric with
a polished but easy warm-weather feel. The color sits somewhere between faded chambray
blue and pale denim, while the herringbone texture gives the jacket more depth than
a flat cotton blazer.

The Ludlow cut is one of J.Crew’s best-known modern tailoring silhouettes: slim,
clean, and easy to dress up or down. This jacket features notch lapels, a two-button
front, chest pocket, flap waist pockets, button cuffs, and light interior construction.
Interior labels identify the style as **J.Crew Ludlow**, marked **40R**, with fabric
by **Somelos, woven in Portugal**.

Marked modern men’s **40R**. Approximate international size conversion: **US 40R/
UK 40R / EU 50R / JP L or 100R equivalent**. Shown on Dean, who is **6’2”, 170 lb**,
has a **40” chest**, wears a **40L slim-fit suit**, and typically wears a men’s 
Medium shirt. On Dean, the blazer fits tailored and close through the shoulders 
and body. Because Dean normally wears a long jacket, the regular length reads slightly
shorter on him.

Styled with a patterned shirt and trousers. Listing is for the **blazer only**.

**Details**

Brand: **J.Crew****
 
Line / Style: Ludlow
 
Era: Modern / contemporary
 
Marked
Size: 40R
 
Estimated Modern Size: Men’s 40R, M/M-L
 
Approx Modern International
Size: US 40R / UK 40R / EU 50R / JP L or 100R equivalent
 
Size Basis: Marked modern
size, Dean’s measurements, and visible model fit
 
Model: Dean
 
Model Measurements:
6’2”, 170 lb, 15.5” neck, men’s Medium shirt, 36” sleeve, 40” chest, 40L slim-fit
suit, 31/32” waist, 33” inseam, size 12 shoe
 
Model Fit Reference: Tailored fit
on Dean; regular jacket length reads slightly short on his 6’2” frame
 
Color: Light
blue / chambray blue
 
Material: Fiber content not recorded; light blue herringbone
woven fabric
 
Fabric Mill / Textile Label: Somelos, woven in Portugal
 
Lapel: 
Notch lapel
 
Closure: Two-button front
 
Pockets: Chest pocket, flap waist pockets,
interior pocket
 
Sleeves: Long sleeves with button cuffs
 
Construction: Lightweight
tailored blazer / sport coat
 
Condition: Very good pre-owned condition

**Fit Notes**

Marked modern men’s **40R**. Estimated fit is **US 40R / UK 40R / EU 50R / JP L 
or 100R equivalent**, best for a modern men’s **Medium to Medium/Large** depending
on preferred fit.

Shown on Dean, who is **6’2”, 170 lb**, has a **40” chest**, wears a **40L slim-
fit suit**, and typically wears a men’s Medium shirt. On Dean, the blazer fits close
and tailored through the shoulders and body. The regular length is wearable but 
reads slightly shorter on him because he typically wears a long jacket.

**Condition**

Very good pre-owned condition with light wear consistent with normal use. No major
flaws are visible in the photos. Light natural wrinkling/creasing is visible, especially
due to the textured woven fabric. Please review photos closely.

**Styling Notes**

An easy tailored layer for spring, summer, and transitional weather. Wear it with
a printed shirt and pleated trousers, a white tee and denim, linen pants, loafers,
or sneakers. The pale blue herringbone fabric pairs well with cream, khaki, navy,
olive, gray, white, brown, and warm prints.

**Shown with**

Styled with a patterned shirt and trousers for the shoot. Listing is for the **blazer
only** unless otherwise stated.

**Curation Note**

Selected for its soft blue herringbone texture, clean Ludlow tailoring, Somelos 
woven fabric, and easy styling range. A strong contemporary menswear piece that 
works casually or dressed up.

**Authenticity Note**

Interior labels read **J.Crew**, **Ludlow**, marked **40R**, with textile label **
Somelos, woven in Portugal**. This is a modern J.Crew blazer, not a vintage garment.