Kids Football Shirts: A Parent's Size Guide
Youth football shirts are sized on age and height first, not on letters, and the ranges overlap deliberately so a child between two sizes can move up rather than being squeezed into the smaller one. A chest measurement is the second check rather than the first. Youth sizes sit inside 10% off sitewide, with nothing to enter and no spend threshold to clear.
Youth sizing in five lines
- Youth football shirts are sized on age and height, not letters — and the ranges deliberately overlap so a child between two sizes can move up.
- A chest measurement is the second check, not the first: children grow faster than their chest catches up with it.
- Sizing up once is the normal habit, because a season is long and a shirt that fits in September does not fit in February.
- 10% off sitewide covers every product while the promotion runs, with no code and no minimum spend.
- Ordering a group in one pass is faster and safer than guessing twice: the youth table gives age and height side by side.
| Situation | What to do | Why it works |
|---|---|---|
| Child at the top of an age band | Size up once | A season is long and growth is not linear |
| Between two age bands | Go by height first | The bands overlap on purpose |
| Comparing with an adult shirt | Do not convert the letter | Youth shirts are cut closer than adult shirts |
| Ordering for several children | Measure each child | The same letter fits differently |
| Buying mid-season | Measure again | Autumn-to-winter growth is uneven |
How youth football shirt sizing works
The most common youth sizing mistake is treating a child's shirt like a smaller adult shirt. It is not. Youth shirts are cut differently through the body, they are sized on age and height first, and the ranges overlap on purpose so that a child sitting between two sizes has somewhere sensible to go.
The overlap is the part parents miss. When a child measures between two ages, the answer is not to pick the smaller one and hope. It is to take the larger, because a season is roughly six months and a shirt that fits in September will not fit by Christmas.
Chest measurement comes third, not first. A child can be tall for their age with a chest that has not caught up, and ordering by chest in that case produces a shirt that hangs off the shoulders. Height is the more reliable primary number for the under-tens.
Measuring a child in a minute
Two minutes with a tape measure answers almost everything. Measure height against a wall, check the age band on the youth table, and only then look at chest for the final confirmation between two sizes.
Once the sizes are settled, the practical advice is to order the whole group in one go. Youth sizes are the easiest to get wrong twice, and the returns window of 30 days is there for the case where a growth spurt arrives earlier than expected.
Height is the one measurement worth doing properly. Stand the child against a wall with heels together, lay a book flat on the head and read the mark. That number is more reliable than an age band, because growth comes in spurts and age bands are averages rather than measurements.
The overlap between age bands is the useful part of the chart rather than a flaw in it. A child sitting at the top of one band and the bottom of the next is the child the overlap was drawn for, and sizing up once at that point is what turns a September shirt into a February shirt.
The second youth sizing trap has nothing to do with the tape: it is the adult shirt already in the wardrobe. Working backwards from an adult letter produces a shirt that is too small through the body, because youth shirts are cut closer than adult shirts on purpose.
The whole method needs a tape measure, a wall and a book. There is no brand-specific chart to hunt down and no need to know which team the shirt belongs to — the youth table is the same one whichever club name is on the front.
Two numbers settle almost every youth sizing question, and neither of them is the age printed on the label. Height against a wall gives the primary number, and chest gives the tie-breaker when a child sits between two bands. Everything else on the chart is a consequence of those two.
It helps to keep the reasoning rather than the answer. A parent who knows why the larger band was chosen can adjust next season without starting over, and can explain the choice to a child who has opinions. A parent who only remembers the letter has to re-derive it every time.
And if two children are close in age but not close in size, order them separately against the chart rather than buying one of each. Siblings a year apart are routinely in different bands, and the assumption that they share a size is the second most common youth sizing error after converting from an adult letter.
Measuring changes which size arrives, not which shirt. The design, the print and the fabric are identical across the size run, so the whole decision narrows to one row of the youth table.
Letters do not work for youth sizes
Youth football shirt size vs adult size
The most common youth sizing error has nothing to do with the chart: it is converting a child's size from an adult letter. A child who wears a small adult shirt does not move into the same letter in a youth range, because youth shirts are cut closer through the body by design.
Treat the two as separate scales. Read the child's height against the youth table, take the chest as a second check, and size up once where the two disagree. That covers the growth you cannot predict without returning anything.
Shop youth and kids football shirts
Six shirts that work for youth and family orders
Live product cards — youth shirts in the sizes the table above describes. Each card opens its product page. Prices are what the store charges today.
Youth shirts and kids training wear
Real Madrid 3Rd Soccer Jersey 2025/26 Real Madrid 3 | Football Fan Gift€39.50View product →
Barcelona 3Rd Soccer Jersey 2025/26 Barcelona 3 | Football Fan Gift€39.50View product →
Liverpool Away Soccer Jersey 1989/91 Liverpool Away Shirt 1989€39.50View product →
Manchester City 3Rd Soccer Jersey 2025/26 Manchester City 3 | Football Fan Gift€39.50View product →
Arsenal 3Rd Soccer Jersey 2025/26 Arsenal 3 | Football Fan Gift€39.50View product →
Juventus Home Soccer Jersey 2026/27 Juventus Home Shirt 2026 | Football Fan Gift€39.50View product →Sizes and prices on each card are the store’s live values.
Measure once, order once. Every youth shirt in the range is included in the 10% sitewide promotion, with no code and no minimum spend. Free Shipping on Orders Over €35.
More youth and sizing guides
Ordering youth sizes with confidence
- Size guide — the age, height and chest columns used in this guide.
- 30-day returns — a youth size that turns out wrong can be changed for 30 days.
- Secure checkout — card details stay on an encrypted payment page.
- Live product cards — each shirt opens its own page with current stock.
Still between two sizes? Take the larger one to cover a full season, and remember the 30-day returns window covers a change of mind.
Youth sizing standards and store pages
- CEN / CENELEC — European clothing size designation uses body height as the primary reference dimension, the same basis the youth table on this store follows. www.cencenelec.eu
- Unifootballshop size guide — the youth age, height and chest columns referred to in this guide. www.unifootballshop.com/pages/size-guide
- Unifootballshop returns policy — how the same 30-day window covers a youth size that has to be changed. www.unifootballshop.com/pages/faq
Sizing standards are the reason this guide puts height before age; the age, height and chest columns quoted above are this store's own.
Shop the kids' shirts in this guide
- Spain Kids Away Jersey 2026/2027 - Lamine Yamal 2 Stars — the kids' away shirt with Yamal's 2 Stars print
- Spain Home Kit for Kids 2026/2027 - Lamine Yamal 2 Stars — the matching kids' home kit
Free Shipping on Orders Over €35 · 30-day returns · fan version and replica-style kits.
Kids football shirt sizing FAQs
How are youth football shirts sized?
By age and height first, with chest as the second check. The ranges overlap deliberately so a child between two sizes can move up rather than being squeezed into the smaller one.
Should I size up for my child?
Usually yes, once. A season is around six months and children grow quickly, so a shirt that fits in September rarely fits by February.
My child measures between two sizes - which one?
Take the larger. Overlapping ranges exist for exactly that case, and growing out of a shirt mid-season costs more than sizing up once.
Do kids shirts come in the same fits as adult shirts?
No. Youth shirts are cut slimmer through the body than adult shirts, so converting an adult size straight across usually ends up too small.
Is 10% off sitewide applied to youth shirts too?
Yes — youth shirts are part of the same promotion rather than treated separately. Free Shipping on Orders Over €35 is standard on the same order.