Definition
Unisex sizing is a single size scale, usually XS to 4XL, that applies to every wearer instead of splitting into men's and women's charts. It works because sizes are defined by garment measurements in centimetres, not by gender labels. Get the chart and the size curve right and a team order lands with almost no exchanges.
Definition
Unisex sizing describes the numbers behind the garment: the half-chest width, the body length, the sleeve length, and how those numbers step up from one size to the next. The letters on the label are shorthand. The centimetres are the actual product.
Take a standard unisex tee. Size M might measure 51 cm half-chest and 72 cm body length, while L measures 54 cm and 74 cm. A wearer who measures 100 cm around the chest needs at least 50 cm of half-chest plus ease, so M is the honest answer even if they usually buy L elsewhere.
How unisex sizing works
The chart is built from a body-neutral block and then graded. Between small sizes, the half-chest usually steps by 2 cm and the body length by 2 cm. From XL upward the steps widen to about 2.5 to 3 cm, because larger bodies vary more. That stepping is set during grading, and it is why the same letter can behave differently across two brands that grade from different base blocks.
Production adds a tolerance. Most suppliers work to plus or minus 1 to 1.5 cm on chest and length, so two garments in the same size will never be identical to the millimetre. Cotton adds another variable, since untreated jersey can shrink up to 5 percent in a hot wash. Pre-shrunk or enzyme-washed fabric holds its numbers far better, which matters when people wear the garment weekly.
Then comes distribution. A group order needs a size curve, not just a total. A typical office lands somewhere near 3 percent XS, 12 percent S, 25 percent M, 27 percent L, 20 percent XL, 9 percent 2XL, and 4 percent 3XL, but a curve is only a starting guess. Collecting real sizes from real people beats any statistical model, and the size run you order should reflect that list.
Unisex sizing in branded merch
- Company-wide apparel rollouts. Send a size form with the actual chest and length measurements next to each letter, plus a note that the cut is a unisex fit. People self-select more accurately from centimetres than from an S, M, L guess.
- Event and staff kits with fixed headcounts. You know the names, so you can order to the exact size list and add a small buffer of M, L, and XL for last-minute joiners. Waste drops and nobody is handed the wrong shirt on the morning of the show.
- Open merch stores and swag drops. Publishing one clear chart per product removes the biggest cause of returns. Add the model's height and worn size, since that single line answers more questions than a paragraph of copy.
Unisex sizing is one measurement-based size scale, from XS to 4XL, that every wearer picks from.
5 tips to elevate your Unisex sizing strategy
| Tip | Steps |
|---|---|
| Publish centimetres | Put half-chest and body length next to every letter, since letters alone mean nothing across brands. |
| Run XS to 4XL | Order the full scale so smaller and larger colleagues are never left with a poor option. |
| Collect real sizes | Use a short form before ordering instead of applying a generic size curve to your headcount. |
| Order a buffer | Add 5 to 10 percent extra in M, L, and XL for new joiners and swaps. |
| Check shrinkage | Ask whether the fabric is pre-shrunk, and wash-test one sample before a large run. |
Key Terminologies
Frequently Asked Questions
How is unisex sizing different from men's sizing?
Many blanks base the unisex scale on a men's block, so the letters look familiar. The difference is that the chart is published as neutral measurements for everyone, and the steps between sizes are set to serve a mixed group rather than one body type.
Should women order a smaller size in unisex?
Often yes, by one size, and sometimes two. The reliable method is to skip the letter and compare the half-chest measurement on the chart against a shirt that already fits well.
Why does a medium fit differently from brand to brand?
There is no legal standard for apparel sizes. Each brand grades from its own base block and works to its own tolerance, so an M can vary by several centimetres. Always compare the measurement table, not the label.
What size range should a unisex chart cover?
XS to 4XL is the working minimum for company merch. A narrow range forces people at either end of the scale into a garment that does not fit, which is the fastest way to make merch go unworn.
How do I collect sizes for a team order?
Share the product chart with centimetres, ask people to pick from a short form, and set a deadline. Keep sample garments in the office if you can, since trying one on removes almost all guesswork.
