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Team Uniform Sizing and Roster Guide: How to Avoid Mistakes

A custom uniform is made for one team, and usually for one named player, so a wrong size or a misspelled name is much harder to fix than a store purchase. These mistakes begin in the information the team sends. This guide explains how to measure players, use a size chart, collect sizes and build a roster with correct names and legal numbers.

Checked · 13 min read

In brief

  • Custom garments generally cannot be swapped for another size the way store stock can.
  • Body measurements and garment measurements are different numbers, so check which one a size chart lists.
  • A size chart applies to one manufacturer, one product and one fit; letter sizes do not transfer between brands.
  • Trying on samples of the actual product tells you more than a chart, and self-reported sizes need checking.
  • Build the roster as a spreadsheet with one row per player and one row per spare garment.
  • Numbers must be unique within a team and legal under your league's current rulebook.

Why sizing and roster mistakes are hard to fix

A store can swap a Medium for a Large because it has more stock and can resell the returned item. A custom uniform is made to order in one team's colors, often with one player's name and number, so a garment in the wrong size has no other buyer. As a general practice, custom garments made as ordered cannot be exchanged for another size the way retail stock can. Exact terms for corrections and remakes depend on the manufacturer, so read them before you order.

A team controls two kinds of mistake. A sizing error means the garment was made as ordered but does not fit the player. A roster error means the order itself was wrong: a misspelled name, a number worn by two players, or a player left off the list.

Both begin in the information the team supplies, so the checks have to happen before production. When you order from us, nothing is produced until you approve an artwork proof, a document that shows the design and order details for sign-off, and that proof lists every player. How it works describes each stage.

Body measurements and garment measurements

A body measurement is taken on the person, for example the distance around the chest. A garment measurement is taken on the finished item, usually laid flat, for example the width of a jersey from one underarm seam to the other. For the same player in a jersey that fits, the two numbers differ.

The gap between them is called ease: the extra room built into a garment so the wearer can move and the garment hangs as its style intends. A compression top has very little ease and a loose basketball jersey has a lot. A university extension guide on fitting sewing patterns notes that ease varies from one style to another and from one pattern brand to another, so a person's usual size will not always fit.

Reference tables do not remove the difference. A standard table of women's body measurements published by ASTM International, a standards body, describes its figures as a baseline: fabric, ease for movement, styling and fit still have to be considered when a garment is designed.

How to measure chest, waist, hips and inseam

You need a flexible tape measure that does not stretch, something to write on, and a second person: extension guides on clothing fit recommend having someone else take the measurements while the person stands in a normal posture.

  • Wear a thin layer. Measure over a T-shirt or underwear, never over a hoodie or pads.
  • Keep the tape level. Around the body, the tape stays parallel to the floor, including across the back.
  • Snug, not tight. The tape should stay in place without slipping or pressing in.
  • Write it down at once. Record each number with its unit and the date.
The four measurements most size charts ask for
MeasurementWhere the tape goesCommon mistake
ChestAround the fullest part of the chest, under the arms and over the tips of the shoulder blades.Letting the tape drop at the back, or measuring over a thick top.
WaistAround the waist, tight enough that the tape does not slip. Follow the chart's description of where the waist is.Pulling the stomach in, or quoting a jeans size instead of measuring.
HipsAround the fullest part of the hips and seat, with the tape parallel to the floor.Measuring at the hip bones, which sit higher than the fullest part.
InseamAlong the inner leg seam of pants that fit, from the point where the seams meet at the crotch down to the finished hem.Measuring the outer side seam, which is the pant length.

If you are unsure where the hips are fullest, measure at two levels and keep the larger number, as one extension guide advises. Shorts inseams are measured the same way as pants. Some charts, youth charts in particular, also ask for height: measure it without shoes, standing against a wall.

A size chart belongs to one manufacturer, one product and one fit

A size chart is a table that links measurements to size labels. Small, Medium and Large are labels, not units, and brands do not all define them the same way. An extension bulletin on buying clothes says sizing can vary among manufacturers and even within one brand. Three things decide what a label means.

  • The manufacturer. Each one develops its own patterns and its own amount of ease.
  • The product. A fitted jersey and a loose warm-up top can share a label and have different dimensions.
  • The fit. Men's or unisex, women's and youth garments are cut on different patterns. Never assume a youth Large equals an adult Small.

How to read a chart

  1. Get the chart for the exact product and fit you are ordering, from the manufacturer that will make it.
  2. Check whether it lists body or garment measurements, and whether the numbers are inches or centimeters.
  3. Compare the player's numbers with the chart. For tops, chest is usually the deciding measurement; for shorts and pants it is usually waist and hips, with inseam for length.
  4. If the measurements point to two sizes, think about how the garment is worn: a jersey that goes over pads or a base layer needs room. If you still cannot decide, ask the manufacturer instead of guessing.

This guide contains no size chart on purpose: a generic chart would be wrong for most products. If you are planning an order with us and need sizing information for a garment, contact our team before you start collecting sizes.

Three ways to collect sizes, and what each one risks

The three common methods differ in how much they depend on someone reading a chart correctly.

Methods for collecting sizes compared
MethodHow it worksStrengthMain risk
Sample size runPlayers try on sample garments of the product, one in each size, and choose.Players judge the real fit, so no chart has to be interpreted.The samples must match the product and fit ordered, and everyone has to attend.
Measuring each playerOne person measures the whole team and reads each size from the chart.Consistent, and possible when no samples are on hand.Depends on careful measuring and on using the right chart.
Self-reported sizesPlayers or parents send in a size or their own measurements.Fast, and nobody has to meet.Sizes may be based on other brands, and everyone measures differently.

Trying on a size run

A size run is a set of sample garments, one in each size. Have each player try the samples over whatever goes under the uniform in a game, then raise both arms, reach and squat. Write the chosen size on the roster on the spot. Whether a size run can be supplied, and on what terms, depends on the manufacturer, so ask early.

Measuring each player

Use one tape and one person, and follow the method above. Record the measurements first and choose sizes afterward with the chart in front of you.

Asking players or parents

Self-reporting is convenient and leaves the most room for error. Send the correct chart and short measuring instructions with the request, and ask for the measurements as well as the size. A reply such as "Medium in everything" describes other brands, not this garment.

Youth players and growth

Size youth players from a current measurement or try-on, not from age, grade or last season's size. According to MedlinePlus, the health reference of the U.S. National Library of Medicine, the adolescent growth spurt peaks at about age 11 and a half in girls and 13 and a half in boys, and slows at around 16 and 18. A player in those years can change size within a season, so collect youth sizes as close to the order date as you can.

Whether to order a size up is a judgment call: a garment with room to grow lasts longer, but one that is clearly too big can be uncomfortable in play. Ask the parent, and consider whether the uniform has to last one season or several.

Building the roster as a spreadsheet

The roster is the list that tells the manufacturer what to make for each player. Build it as a spreadsheet with one row per player and one column per fact, so it can be sorted, counted and checked.

  • Name as it should be printed, typed exactly, character for character.
  • Number, one per player.
  • Size, written with its fit, such as Youth L or Women's M, not just L. If jerseys and shorts are sized separately, give each its own column.
Example roster layout (placeholder names and sizes)
Name on garmentNumberJersey sizeShorts size
PLAYER ONE4Adult MAdult M
PLAYER TWO11Adult LAdult M
SAMPLE-NAME23Youth XLYouth L
EXAMPLE JR.30Adult SAdult S
Spare (no name)15Adult MAdult M
Spare (no name)25Adult LAdult L

Keep the sheet plain: one header row, no merged cells, and never two players in one row. Send it to our team as a CSV file (a plain-text export any spreadsheet program can produce) or a spreadsheet, and we check every row, flagging missing sizes and duplicate numbers.

Names: spelling, capitals, hyphens and suffixes

A manufacturer prints what the roster says, so agree on one convention and apply it to every row.

  • Spelling. Have each player or parent confirm the name in writing. Do not type names from memory or handwriting.
  • Capitals. Choose all capitals or mixed case. In mixed case, names such as McAllister or DeSoto need a decision about the inner capital.
  • Hyphens, apostrophes and accents. Type them exactly as they should appear, and check on the proof that the lettering style shows them correctly.
  • Suffixes. Decide whether Jr., Sr., II or III is printed, and with what punctuation.
  • Long names. A long or double-barreled surname has to fit across the back, so it may be printed smaller or narrower. Handling varies by manufacturer and lettering style, so look at the longest name on the proof.

Spare garments

A spare is an extra garment ordered with the main order for a player who joins late or a jersey that is lost or damaged. Give each spare its own row so it is counted, sized and proofed like every other garment. Leave the name blank, match the most common sizes on the roster, and use a legal number that no rostered player wears.

How many spares to order is a team decision. It depends on how often your roster changes and on how the manufacturer handles small reorders, which varies, so ask before you finalize the order. Dealers ordering for several teams should keep one roster per team; our trade page is written for businesses that order regularly.

Number rules: unique on the team and legal in the league

Every number has to pass two tests. It must be unique within the team, because officials and scorers identify players by number. The volleyball rules of the National Federation of State High School Associations (NFHS), for instance, require that a player's number not duplicate a teammate's. It must also be a number your governing body allows, which is easier to overlook.

Duplicates tend to come from two players asking for the same favorite number, or from a spare that repeats a rostered number. Have one person assign numbers, and sort the sheet by number to see repeats.

Some governing bodies also restrict which numbers may be worn. The NFHS, which publishes playing rules for U.S. high school sport, is a clear example.

Examples of NFHS number rules, from the editions listed in the sources
SportNumbers allowedDetail to watch
Basketball0 to 5, 00, 10 to 15, 20 to 25, 30 to 35, 40 to 45 and 50 to 55No digit higher than 5. A team may not list both 0 and 00.
Football0 to 99A number written with a zero in front of it, such as 07, is illegal.
Volleyball0 to 99, no more than two digitsNo duplicates on a team. From July 1, 2028, numbers that begin with a zero, such as 01, are no longer legal.

These are high school examples only. Colleges, clubs, youth leagues and adult leagues set their own rules, so a number that is fine in one competition can be illegal in another.

Handling players' personal data

A roster is personal data, and on a youth team it is data about children. Collect only what the order needs: the name as printed, the number and the size. The U.S. Federal Trade Commission's guidance on protecting personal information gives businesses the same advice: keep only what you need, and dispose of what you no longer need.

  • Leave out everything else. Birth dates, home addresses, phone numbers, photos and medical notes do not belong in a roster file.
  • Drop measurements once the size is chosen. The manufacturer needs the size, not the player's chest or waist measurement.
  • Limit who can open the file. Share it with the people placing the order, not through a public link or a team-wide chat.
  • Go through parents or guardians for minors, and follow your school's, club's or league's policy on children's information. Laws on children's data differ from place to place.
  • Treat the name on the back as a choice. Some youth teams print surnames only, or numbers without names.
  • Clean up afterward. Keep the final roster while you may need it for reorders, then delete old drafts and form responses.

Checklist before you submit the roster

Run through this list once the sheet looks finished, ideally with a second person reading it aloud against the team list.

Pre-submission checklist
CheckHow to confirm it
Every player has a rowCount the rows against the team list.
Every name is spelled as it should printConfirmed in writing by the player or a parent.
One convention for capitals, hyphens and suffixesRead down the name column.
Every number is uniqueSort the sheet by number.
Every number is legalCompare with your governing body's current rulebook.
Every row has a size with its fitNo blanks, and Youth L instead of just L.
Sizes came from the right chartThe chart is for this manufacturer, product and fit.
Youth sizes are recentMeasured or tried on close to the order date.
Spares are listedOwn rows, blank names, unused legal numbers.
Only name, number and size are in the fileDelete any other personal data.

Two more checks follow once you send it. Review the rows we flag and clear every one. Then read the artwork proof line by line against your sheet: it lists every player, and approving it is the last step before production. More guides are in our guide library.

Questions buyers ask

Can we exchange a custom jersey that turns out to be the wrong size?
Generally not in the way you would return a store purchase. A custom garment is made for your team, often with a player's name and number, so it cannot be resold. What happens when a garment does not fit depends on the manufacturer's terms, so read them before ordering and check sizes before you approve the proof.
Do sizes from another brand carry over?
No. Letter sizes are labels that each manufacturer defines for itself, and they can differ between products from the same manufacturer. Use the chart supplied for the exact product and fit you are ordering, or have players try on samples of that product. A size from any other garment is only a starting guess.
Should we order a size up for youth players?
There is no rule that suits every team. The adolescent growth spurt peaks at around 11 and a half in girls and 13 and a half in boys, so players in those years can outgrow a garment quickly. Weigh that against comfort in play and how long the uniform has to last.
Which jersey numbers are allowed?
It depends on the sport and the governing body. For example, NFHS high school basketball allows only 0 to 5, 00, and two-digit numbers from 10 to 55 in which neither digit is higher than 5. Other sports and levels differ, and rules are revised, so check your league's current rulebook before assigning numbers.
Can I send my roster as a spreadsheet?
Yes. Send it to us on WhatsApp as a list, a CSV file or a spreadsheet. We check every row and flag missing sizes and duplicate numbers. The artwork proof you approve afterward lists every player.

Sources

General information, checked against the pages below. It is not legal advice, and requirements differ between manufacturers, leagues and countries.

This guide was researched and written with AI assistance, checked against these sources and reviewed by our team. How we write our guides.

  1. NFHS Basketball Uniforms, National Federation of State High School Associations
  2. 2026 NFHS Football Jersey and Pant Rules (June 2026), National Federation of State High School Associations
  3. NFHS Volleyball Uniform Rules (2026-27), National Federation of State High School Associations
  4. Check Your Pattern for Proper Fit (Guide C-220), New Mexico State University Cooperative Extension Service
  5. Menswear (Bulletin No. 668), University of Idaho Cooperative Extension Service
  6. ASTM D5585-21: Standard Tables of Body Measurements for Adult Female Misses Figure Type, Size Range 00–20, ASTM International
  7. Adolescent development, MedlinePlus, U.S. National Library of Medicine
  8. Protecting Personal Information: A Guide for Business, Federal Trade Commission
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