This CPO-inspired work shirt effortlessly merges tradition with modern design. Crafted from durable 17oz Japanese cotton duck, it features oversized copper snaps and handwarmer pockets, embodying both style and functionality. The intentionally shorter length allows for a clean, untucked look, while its thoughtful construction ensures longevity and comfort. Ideal for layering or standalone wear, this shirt is tailored for those who appreciate timeless pieces that age beautifully with every wear.
From the brand: “The UnTucked” is exactly what it sounds like, a CPO work shirt cut with a slightly shorter, balanced length so it sits clean when worn untucked. First introduced in 2017, this design blends the silhouette and patch chest pockets of a traditional work shirt with the oversized copper snaps and handwarmer pockets pulled from classic CPO styling.
Built from 17oz Japanese cotton duck, this is dense, plain-weave canvas with real backbone. The brown warp and weft give it depth from day one, and the fabric will gradually fade and soften with wear. Sanforized and one-washed, it is ready to go with virtually no shrinkage expected. Twill-lined collar and cuffs, bias-bound arm openings, chainstitched side seams, and felled internal seams round it out with serious construction throughout.
Designed by Shinichi Haraki and handmade by WORKS INC. in Japan, this is a hardwearing overshirt that only improves the more you put it through.
17oz Japanese cotton duck
100% cotton
Brown warp and weft
Plain weave canvas construction
Sanforized and one-washed
CPO work shirt design
“UnTucked” slightly shorter body length
Oversized copper snap fastenings
Chest pockets with pen holder
Handwarmer pockets
Twill-lined collar and cuffs
Bias-bound arm openings
Straight back yoke
Rounded hem with gussets and chainstitch run-off
Single and double needle stitching
Poly/cotton constructional thread
Bar tack pocket reinforcements
Chainstitched side seams
Felled internal seams
Designed by Shinichi Haraki
Handmade by WORKS INC.
Made in Japan
Handmade by WORKS INC. in Japan
Tag Size
Chest
Shoulder
Length
Sleeve
Waist
Opening
Sleeve Opening
XS
20.0
16.6
28.4
24.0
19.2
19.6
4.0
S
20.5
17.3
28.7
24.2
20.0
20.3
4.2
M
21.4
18.0
29.4
24.7
20.5
21.1
4.4
L
22.3
19.0
30.4
25.5
21.5
22.2
4.6
XL
23.0
19.5
30.6
26.2
22.3
22.8
4.8
XXL
23.6
20.2
31.3
26.9
23.0
23.6
5.0
XXXL
24.4
21.2
31.9
27.4
23.7
24.4
5.1
XXXXL
25.0
21.6
32.5
27.7
24.4
24.7
5.3
A variance of +/-.5" is within tolerance.
Fit Notes:
Tommy wears a large an XL in almost all shirting from Iron Heart. This one has bit of an outerwear touch, so it runs roomier. He could wear a large, but preferred the XL. We recommend you stick with what you normally buy from Iron Heart, in terms of shirting. Tommy is 5'9," 165lbs with a 40" chest.
