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Pure Blue Japan sumi slub yarn sweatshirt front flat lay, crew neck, contrast stitching
Pure Blue Japan sumi slub yarn sweatshirt front flat lay, crew neck, contrast stitching
Close-up front of Pure Blue Japan sumi slub yarn sweatshirt, knit collar, V-stitch detail, Dant
Close-up front of Pure Blue Japan sumi slub yarn sweatshirt, knit collar, V-stitch detail, Dant
Close-up of Pure Blue Japan grey slub yarn sweatshirt cuffs and hem, showing ribbed texture.
Close-up of Pure Blue Japan grey slub yarn sweatshirt cuffs and hem, showing ribbed texture.
Close-up of Pure Blue Japan 5400 sumi slub yarn sweatshirt hem, ribbed cuff, side seam, grey fabric texture
Close-up of Pure Blue Japan 5400 sumi slub yarn sweatshirt hem, ribbed cuff, side seam, grey fabric texture
Close-up of Pure Blue Japan sumi slub sweatshirt hem, showcasing textured knit fabric and ribbed bottom.
Close-up of Pure Blue Japan sumi slub sweatshirt hem, showcasing textured knit fabric and ribbed bottom.
Flat lay of Pure Blue Japan Sumi slub yarn sweatshirt, back view, showing ribbed hem and sleeves.
Flat lay of Pure Blue Japan Sumi slub yarn sweatshirt, back view, showing ribbed hem and sleeves.
Full body front view of athletic 5'9 male model in Pure Blue Japan sumi slub yarn sweatshirt, Dant casual apparel.
Full body front view of athletic 5'9 male model in Pure Blue Japan sumi slub yarn sweatshirt, Dant casual apparel.
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 front sleeves and ribbed cuffs on Pure Blue Japan Sumi Slub Yarn Sweatshirt, worn by male model, 5'9
Close-up of front sleeves and ribbed cuffs on Pure Blue Japan Sumi Slub Yarn Sweatshirt, worn by male model, 5'9
Close-up of Pure Blue Japan sumi slub sweatshirt front neck detailing on male model, 5'9
Close-up of Pure Blue Japan sumi slub sweatshirt front neck detailing on male model, 5'9
Close-up of male model 5'9
Close-up of male model 5'9
Close-up of Pure Blue Japan sumi slub yarn sweatshirt worn by male model, showing back shoulder seam detail, athletic build, 5'9
Close-up of Pure Blue Japan sumi slub yarn sweatshirt worn by male model, showing back shoulder seam detail, athletic build, 5'9
Close-up of male model 5'9
Close-up of male model 5'9
Close-up of Pure Blue Japan Sumi Slub Yarn Sweatshirt shoulder seam, shown on 5'9
Close-up of Pure Blue Japan Sumi Slub Yarn Sweatshirt shoulder seam, shown on 5'9
Pure Blue Japan sumi slub yarn sweatshirt front flat lay, crew neck, contrast stitching
Close-up front of Pure Blue Japan sumi slub yarn sweatshirt, knit collar, V-stitch detail, Dant
Close-up of Pure Blue Japan grey slub yarn sweatshirt cuffs and hem, showing ribbed texture.
Close-up of Pure Blue Japan 5400 sumi slub yarn sweatshirt hem, ribbed cuff, side seam, grey fabric texture
Close-up of Pure Blue Japan sumi slub sweatshirt hem, showcasing textured knit fabric and ribbed bottom.
Flat lay of Pure Blue Japan Sumi slub yarn sweatshirt, back view, showing ribbed hem and sleeves.
Full body front view of athletic 5'9 male model in Pure Blue Japan sumi slub yarn sweatshirt, Dant casual apparel.
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 front sleeves and ribbed cuffs on Pure Blue Japan Sumi Slub Yarn Sweatshirt, worn by male model, 5'9
Close-up of Pure Blue Japan sumi slub sweatshirt front neck detailing on male model, 5'9
Close-up of male model 5'9
Close-up of Pure Blue Japan sumi slub yarn sweatshirt worn by male model, showing back shoulder seam detail, athletic build, 5'9
Close-up of male model 5'9
Close-up of Pure Blue Japan Sumi Slub Yarn Sweatshirt shoulder seam, shown on 5'9

5400-SUMI - Slub Yarn Sweatshirt - Sumi Ink

$ 300.00

The 5400-SUMI Sweatshirt from Pure Blue Japan is a modern classic built on heritage craftsmanship. This piece is knit from slub-rich cotton yarns that create an intentionally uneven, tactile surface full of texture and visual life. The fabric is dyed with traditional Sumi ink-based methods, giving it a profoundly deep charcoal tone with subtle tonal shifts that become more expressive with time. Cut in a comfortable, boxy sweatshirt silhouette, it features a crew neck, drop shoulders, and ribbed cuffs and hem that feel properly substantial without being heavy. It’s the kind of sweatshirt that wears in beautifully - softening through the body while its sumi dye reserves just enough character to stand out.

  • Slub-textured cotton jersey, medium weight
  • Traditional Sumi ink dye process, grey/green finish
  • Boxy, vintage sweatshirt cut with drop shoulders
  • Ribbed crew neckline, cuffs, and hem
  • Made in Japan
Size Chest Length
3 (M) 22.75 26.75
4 (L) 24 28
5 (XL) 25 29
6 (XXL) 26 30

A variance of +/-.5 is within tolerance. 

Fit Notes: Shop owner Tommy is wearing a size 5 in this sweatshirt. That is the size he decided to go with on all the tops this round. As you can see by the size charts, these run pretty trim. He would have been able to wear a size 4 in this piece for a more tailored look, but preferred the room of a 5 for a boxier look. We recommend starting with one size larger than what you normally wear. Tommy is 5'10,' 162lbs with a 40" chest.