Sumo_Mawashi

Sumo #4 Dyed is the color-finished version of our #4 Duck Greige — the same 24 oz, 100% cotton construction that's been trusted for decades, now reactive dyed for buyers who need color without giving up strength.

Finished width holds at 60 inches. Same fabric top to bottom — we just add the color.

Where it goes: tote bags, boat bags, beach bags, duffles, aprons, tool rolls — anything that needs to carry weight, survive salt air, and look good doing it.

Why Choose Sumo

Believe it or not, this same #4 construction is the fabric of choice for Mawashi — the belts Sumo wrestlers compete in. When a fabric has to hold its shape under that kind of load, it earns the name.

Sumo is reactive dyed — a process that bonds color into the cotton fiber itself rather than coating the surface. The result is deep, even color that holds up to salt, sand, and heavy daily use. Direct sun over time will fade it, same as any reactive-dyed cotton; keep it shaded when it's not working and the color holds.

Every roll comes off a computer-matched dye run, so the black you order is the black you get — batch to batch, order to order.

Sold in 25-yard rolls, 60 inches wide.

Available Colors

Sumo is currently stocked in Black. Inventory shifts daily — if you need a different color for this weight, ask about Bulk Dyeing for volume orders or Small Batch Dyeing for low-MOQ custom runs.

⚠️ Color accuracy notice: Screen displays vary. Colors shown are approximations. We strongly recommend requesting a physical swatch before placing a production order.
Sumo #4 Dyed Black swatch

Sumo #4 Duck — Fabric Specifications

Fiber Content100% Cotton
Style / ConstructionPlain Weave
Yarn Count (Warp / Weft)7s/5 x 7s/5
Construction (Warp / Weft, per inch)29 x 18
Fabric Weight24 oz/sq.yd nominal (778.6 g/m² tested)
Tensile Strength (Warp / Weft)393 lbf / 265 lbf
Tear Strength (Warp / Weft)22.60 lbf / 13.78 lbf
Dimensional Stability (Warp / Weft)-2.31% / -0.57%
Color Fastness to Washing (Shade Change)4
Color Fastness to Rubbing (Dry / Wet)4-5 / 3

Values shown are from our Black colorway lab report (National Textile Research Centre Report No. 16-028641, dated 27-Aug-2026) and are representative of this construction across the line. Minor variation is normal between dye lots and colors.

Care & Use

Machine Wash: Gentle or Delicate
50°C / 120°F
Normal Cycle
Do Not Iron
Do Not Dry Clean
Do Not Bleach

Note: Colors can vary from one dye lot to another. Bright and dark colors may bleed more and are not recommended to be mixed with white and/or lighter colors. There is no guarantee on the lightfastness, color transference, or printability of the fabric. This fabric has been produced (and is intended for use) for a light to medium industrial end use (for indoors) such as aprons, tote bags, upholstery, etc. The user or buyer is requested to exercise sound judgment before making the right choice of fabric and/or print method, including the ink chemistry.

Related Fabrics:

Soft enough to handle. Tough enough to wrestle the day.

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