Mawashi Guide: Tying, Fitting, Folding & Care
The mawashi is the only thing you need to sumo!
This thick belt — wrapped around the waist and thighs — is the most iconic piece of equipment in the sport, and for good reason: it's the only piece. No padding, no shoes, no uniform. Just the belt.
Whether you're a sumo fan curious about how it all works, or you've just got your hands on a Cheeky Sumo mawashi for the first time, this guide covers everything: how to fit, tie, fold, and keep it in fighting shape.
In this guide, you will learn:
Canvas Mawashi
Cotton Twill Mawashi
Not a mawashi owner yet? Read on — and if you like what you learn, take a look at our Cheeky Sumo twill and canvas belts in the shop!
HOW TO FIT YOUR MAWASHI
Your mawashi is intentionally shipped long. Because every athlete's body and tying preference differ, extra length ensures a custom fit for every wrestler.
Tie Your Belt: Wrap and tie your mawashi according to your preferred comfort and firmness. (See below for how to tie your belt.)
Measure the Tail: Once tied, check the length of the fabric tail hanging from the final knot.
Trim the Excess: Carefully cut the tail so that only 4 to 6 inches (roughly a fistful) extends beyond the knot.
HOW TO TIE YOUR MAWASHI
Proper tying technique is critical for performance and athlete safety.
Safety Warning: A mawashi knot must lay flat against your lower back. Never pull the knot so tight that fabric bunches into a thick ball at the base of your spine. Landing on a bulky knot during a throw can cause severe back or spinal injury.
HOW TO FOLD YOUR MAWASHI
Proper folding creates the correct width, firmness, and clean edges required for training. The technique depends on the fabric style you purchased. Our canvas belts are folded using the Double Gate Fold while our twill mawashi are folded using a Shimekomi-Style Fold.
Canvas Mawashi (Double Gate Fold)
Canvas belts use a clean, straightforward folding method designed to tuck and protect raw edges inside the fabric.
Fold the belt in half lengthwise. Unfold to reveal the center line.
Bring both outer edges inward toward the center line, leaving roughly 0.5 cm of space between the edges.
Fold the entire belt in half along the center, tucking the cut edges securely inside.
Press with the cold iron once more to set the final structure.
Twill Mawashi (Shimekomi-Style Fold)
Twill belts require a traditional multi-step fold. You will need a cold iron (an unheated iron) to set firm, precise creases.
Phase 1: Setting the Creases
Fold the belt in half lengthwise.
Fold the cut bottom edge up by 1/3 of the belt's total width.
Fold the top edge down over that 1/3 section, creating 6 layers of fabric.
Press firmly with a cold iron to set these initial creases, then unfold the material completely.
Phase 2: Final Assembly
Working from the creases set in Phase 1, fold both long edges in from the outermost crease lines. (Note: One side will fold with the crease line; the other will fold against it—this is expected.)
Fold the belt in half lengthwise to create a 4-layer stack to one side.
Take the 2-layer side and fold it up over the 4-layer stack, resulting in a firm 6-layer belt. When finished, the top edge should have 3 folded edges and the bottom edge should have 1 folded edge.
Press with the cold iron once more to set the final structure.
HOW TO CLEAN YOUR MAWASHI
While sumo tradition holds that washing a belt washes away the experience gained in it, modern athletic care requires keeping gear clean for personal health and the safety of your training partners.
Recommended Routine
Spot Clean (After Every Use): Lightly mist sweat-prone areas with water and wipe gently using a soft cloth or brush. Focus on sections in direct contact with skin. Avoid aggressive scrubbing to preserve fabric texture.
Sun Dry (After Every Use): Hang your mawashi fully extended in direct sunlight. UV rays naturally disinfect the fabric, prevent mold/mildew, and maintain the belt’s firm feel.
Cold Water Soak (Periodic Maintenance): Occasionally unfold and soak your belt in a cold bath for 15–30 minutes to loosen trapped salt, sweat, and dirt.
Things to Avoid
❌ Machine washing
❌ Hot Water
❌ Tumble drying
❌ Bleach or harsh chemical cleansers
Respecting your gear is part of respecting the dohyo. By keeping your mawashi clean, well-folded, and properly fitted, you protect yourself, honor your fellow rikishi, and ensure your belt lasts through countless matches.