A man wearing a long white Muji button up along with black shorts and olive sandals

Muji

$$
StyleMinimalist / ContemporaryWorkwear / Heritage
Known forHome (rugs/towels)TopsSocks & underwear
Origin · Tokyo, JapanMade in · ChinaFounded · 1980

Muji is the apparel and lifestyle brand of Tokyo-based Ryohin Keikaku, launched in 1980 as a no-brand private label for Japan's Seiyu supermarkets; clothing arrived in 1981 and the first store, MUJI Aoyama, opened in 1983. Ryohin Keikaku became independent in 1989 and now runs stores worldwide. Clothing focuses on undyed and unbleached cotton, boxy tees, wide-leg trousers and washable knitwear, priced low and sold beside furniture, stationery and food. The US subsidiary filed Chapter 11 in 2020, restructuring around regional markets and e-commerce; MUJI Labo covers seasonal unisex designs.

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How Muji fits
CategoryRunsShapeLengthSize adviceConfidence
Hoodies & sweatshirtsslightly smallstraight and slightly boxy, not oversized despite the casual lookregular to slightly short in body and sleeveGo up a size for layering room and to avoid short sleeves.medium
Shirts & overshirtsruns smallregular to relaxed body but noticeably narrow across the chest, shoulders and armholesregular, often shorter in the tail than Western shirtsSize up one, and consider two if you are broad-shouldered or have longer arms.high
Trousers & pantstrue to sizerelaxed, tapered or wide-leg depending on model, generally forgiving in the seat and thighinseams cut short for Western heights; taller wearers often find them croppedTake your usual waist but check the inseam, as lengths tend to run short.medium
Jeans & denimslightly smallstraight to relaxed with a mid rise; less stretch than the price suggestsshort to regular inseam, often ankle-length on taller wearersConsider going up one waist size if you are between sizes, and expect a shorter inseam.medium
Jacketsruns smallclean and fairly narrow through the shoulders and chest, not a roomy outerwear cutregular to slightly short, with sleeves that run short on longer armsSize up one for layering over a sweater or hoodie.medium
T-shirts & graphic teesslightly smallboxy with a fairly straight body and a wide neck opening on some stylesshort to regular body, sleeves often hit mid-bicepSize up one if you want normal length and room in the shoulders; stay true to size only if you like a cropped, boxy look.high
Does Muji run big or small?

Muji fits slightly small. Most Western shoppers do best going one size up from their usual, particularly for tops and anything with a set shoulder seam. Muji garments are cut in Japanese proportions, so while the silhouettes look boxy and relaxed, the actual grading tends to run about a size small for Western frames, with tight shoulders and short sleeves being the common complaint.

How does Muji fit?

Muji garments are cut in Japanese proportions, so while the silhouettes look boxy and relaxed, the actual grading tends to run about a size small for Western frames, with tight shoulders and short sleeves being the common complaint. Overall shape: boxy and relaxed through the body but narrow in the shoulders and armholes.

How do Muji hoodies & sweatshirts fit?

Muji hoodies & sweatshirts fits slightly small. Go up a size for layering room and to avoid short sleeves. Shape: straight and slightly boxy, not oversized despite the casual look.

How do Muji shirts & overshirts fit?

Muji shirts & overshirts runs small. Size up one, and consider two if you are broad-shouldered or have longer arms. Shape: regular to relaxed body but noticeably narrow across the chest, shoulders and armholes.

How do Muji trousers & pants fit?

Muji trousers & pants fits true to size. Take your usual waist but check the inseam, as lengths tend to run short. Shape: relaxed, tapered or wide-leg depending on model, generally forgiving in the seat and thigh.

Directional fit consensus summarized from public sources with AI — a starting point, not a guarantee. Confirm with the product's own measurements before buying.

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