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Flat lay of classic navy Jackman JM5460 Dotsume long sleeve T-shirt, front view, crew neck.
Flat lay of classic navy Jackman JM5460 Dotsume long sleeve T-shirt, front view, crew neck.
Close-up of Jackman classic navy dotsume t-shirt front, crew neck and fabric texture detail.
Close-up of Jackman classic navy dotsume t-shirt front, crew neck and fabric texture detail.
Close-up of classic navy Jackman long sleeve T-shirt, front hem and ribbed cuffs detail
Close-up of classic navy Jackman long sleeve T-shirt, front hem and ribbed cuffs detail
Flat lay of Jackman JM5460 dotsume long sleeve T-shirt in classic navy, back view
Flat lay of Jackman JM5460 dotsume long sleeve T-shirt in classic navy, back view
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Close-up of male model, 5'9
Close-up of male model, 5'9
Close-up front of Jackman JM5460 Dotsume LS T-shirt in classic navy on male model, crewneck detail visible, male is 5'9
Close-up front of Jackman JM5460 Dotsume LS T-shirt in classic navy on male model, crewneck detail visible, male is 5'9
Close-up of classic navy Jackman Dotsume LS T-shirt sleeve cuff on male model, left side.
Close-up of classic navy Jackman Dotsume LS T-shirt sleeve cuff on male model, left side.
Close-up of classic navy Jackman dotsume long sleeve T-shirt back on male model, showing fabric texture, athletic build, from Dant contemporary casual apparel.
Close-up of classic navy Jackman dotsume long sleeve T-shirt back on male model, showing fabric texture, athletic build, from Dant contemporary casual apparel.
Flat lay of classic navy Jackman JM5460 Dotsume long sleeve T-shirt, front view, crew neck.
Close-up of Jackman classic navy dotsume t-shirt front, crew neck and fabric texture detail.
Close-up of classic navy Jackman long sleeve T-shirt, front hem and ribbed cuffs detail
Flat lay of Jackman JM5460 dotsume long sleeve T-shirt in classic navy, back view
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Close-up of male model, 5'9
Close-up front of Jackman JM5460 Dotsume LS T-shirt in classic navy on male model, crewneck detail visible, male is 5'9
Close-up of classic navy Jackman Dotsume LS T-shirt sleeve cuff on male model, left side.
Close-up of classic navy Jackman dotsume long sleeve T-shirt back on male model, showing fabric texture, athletic build, from Dant contemporary casual apparel.

JM5460 - Dotsume LS T-Shirt - 270 Classic Navy

$ 160.00

The Jackman Long Sleeve Dotsume T-Shirt is built around one thing above all else: density. Knitted in Japan from 100% American cotton, the 11.5oz dotsume fabric is produced on vintage loopwheel machines that prioritize tension and structure over softness out of the gate. The result is a shirt that feels substantial in hand, holds its shape relentlessly, and shrugs off repeated wear and washing without twisting or collapsing.

This long sleeve version pushes the concept even further. The weight and rigidity land closer to a lightweight crewneck sweatshirt than a standard tee, while still wearing like a T-shirt. The fit is boxy and balanced, with a sturdy ribbed neckline that anchors the whole piece. It’s unapologetically heavy, intentionally old-school, and easily one of the most substantial cotton knits Jackman produces.

  • 100% American cotton
  • 11.5oz heavyweight fabric
  • Loop-wheel knitted for durability
  • Boxy, vintage-inspired fit
  • Ribbed neckline
  • Made in Japan
Size Body Length Chest Width Shoulder Width Sleeve Length
S 26.8 22.0 17.7 23.0
M 27.6 22.8 18.5 23.6
L 28.3 23.6 19.3 24.2
XL 29.1 24.4 20.1 24.8
XXL 29.9 25.2 20.9 25.4

A variance of .5" is within tolerance. 

Fit Notes: Shop owner Tommy is wearing a large by rule from Jackman. He likes the roomier fit and it accounts for shrinkage. His size and weight would make him a Medium in this, but he prefers more room in tees and pants these days. We recommend sizing up once in this t-shirt, but this is slightly boxier than the short-sleeve version. So keep that in mind. Tommy is 5'9," 165lbs with a 40" chest.