Slim, Regular, Relaxed or Boxy: Which Shirt Fit Is Right for You?
Shirt fits differ mainly in how much room they leave around the chest. Here is what slim, regular, relaxed and boxy really mean, who each suits, and when to wear them.
The difference between shirt fits is mostly one number: how much room the shirt leaves around your chest, called ease. A slim fit leaves little, a regular fit leaves a comfortable hand's width, a relaxed fit leaves more, and a boxy fit is cut wide and short so it hangs straight down. The right one depends on your build and where you are wearing it.
The four fits at a glance
| Fit | Chest ease (garment minus body) | Shape | Suits | Best for |
|---|---|---|---|---|
| Slim | About 2–3 in | Tapered at the waist, narrow sleeves | Lean and slim builds | Office, evenings out, under a blazer |
| Regular | About 4–5 in | Straight through the body, slight shaping | Almost everyone | Office, weddings, weekends; tucked or untucked |
| Relaxed | About 6–8 in | Fuller body and sleeve, dropped shoulder at times | Broader builds, men who like room | Casual days, travel, heat |
| Boxy | 8 in or more, often shorter length | Wide and square, falls straight, cropped hem | Slim to average builds, taller frames | Casual and streetwear, worn untucked |
These are typical ranges, not a rule. Every brand cuts a little differently, so always compare the garment measurements on the size chart with your own body.
Slim fit
A slim fit follows the body. The side seams curve in at the waist and the sleeves are narrower. It looks sharp on a lean frame and sits cleanly under a jacket with no fabric bunching at the waistband.
Watch for: buttons pulling into small X shapes across the chest, or the shirt riding up when you raise your arms. Both mean it is too tight. In Indian heat, slim fits can also feel close and warm by afternoon.
Regular fit
A regular fit is the middle ground. It is straight through the body with a little shaping, leaves enough room to move and sit comfortably, and still looks neat when tucked in. It is the fit most men can wear to the office, to a family function and on a Sunday without changing.
This is the fit mtsya makes. Every mtsya shirt is cut in one regular-fit pattern. On our size chart, a size M fits a 40¼ in body chest and measures 44 in around the chest as a garment, so there are a few inches of ease: enough to move, not enough to billow. You can see every size in the size guide.
Relaxed fit
A relaxed fit gives more room through the chest, waist and sleeves. It is comfortable, cool in summer and kind to broader builds or anyone carrying a little weight at the middle. It looks best untucked or loosely half-tucked with casual trousers. Tucked into formal trousers it can balloon at the waist.
Boxy fit
A boxy fit shirt is cut wide and square and usually shorter than standard, with the hem ending around the hip. Shoulders are often dropped. It hangs straight down from the chest rather than following the body, which gives it a clean, modern line. It comes from workwear and streetwear and is meant to be worn untucked.
Who a boxy fit suits
- Slim and average builds, because the extra width adds shape.
- Taller men, who can carry the width without looking swamped.
- Anyone who wants an easy, casual line over wide or straight trousers.
When a boxy fit is the wrong choice
- Under a blazer or tucked in: the width bunches at the waistband.
- On shorter frames, if the hem sits too low; the short length is part of the look.
- Formal offices, where a boxy shirt can read as too casual.
Which fit for which occasion
| Occasion | Best fit | Tucked? |
|---|---|---|
| Formal office, interviews | Slim or regular | Yes |
| Business casual | Regular | Either |
| Weddings and functions | Regular or slim | Usually yes |
| Weekend, travel, hot days | Regular or relaxed | No |
| Streetwear, casual evenings | Boxy or relaxed | No |
How to check the fit in the mirror
- Shoulders: the shoulder seam should sit at the edge of your shoulder bone (except dropped-shoulder boxy cuts).
- Chest: no pulling at the buttons. You should be able to pinch an inch or two of cloth at each side.
- Sleeves: the cuff should meet the base of your thumb with your arms relaxed.
- Length: for tucking, it should stay in when you raise your arms. For wearing out, it should end around the middle of your fly. Our piece on whether to tuck in your shirt covers this in detail.
- Collar: buttoned, you should slip two fingers in comfortably.
Choosing a mtsya shirt
Because there is one regular fit across the range, choosing a mtsya shirt is about colour, not cut. If you want something clean for work, start with Manu White or Hard Rain. For evenings, Deep Water or Ash. Each has the Matsya fish stitched small at the left chest, after the fish that guided Manu's boat through the flood. Sizes run S to XXL, with a size exchange within 7 days of delivery.
Not sure which colour suits you? Try what colours suit me, then plan the rest of the outfit with the shirt and pant combination guide. Browse the whole collection.
Nine shirts, each named for a moment of the Matsya flood. The fish stitched small at the chest.
See the shirts Find your size