Size Guide

Fan Jersey Guide · Sizing

Everything below is the garment measured flat, not your body. Chest is the full width from armpit seam to armpit seam; length runs from the highest shoulder point to the hem. Fastest way to get it right: take a jersey that fits you well, measure it the same way, and match the numbers.

In short

Measure a jersey you already own, laid flat: chest straight across between the armpit seams, length from the highest shoulder point to the hem, and match those numbers to the chart for your category. Between sizes? Go up — jerseys are cut to hang loose. Our charts cover men's/unisex XS–5XL, women's W-XS–W-4XL, Authentic numbered sizes 36–64, youth S–XL and preschool/toddler 12M–7.

How to measure

Chest

Lay the jersey flat and measure straight across, from one armpit seam to the other. That full width is the number in the chart — so a chart reading of 44 in means the shirt measures 44 in across, not a 44 in body.

Length

From the highest point of the shoulder straight down to the bottom hem, with the jersey laid flat and smoothed out.

Men's / unisex jerseys

XS – 5XLthe default cut — loose through the body, straight hem

Size	Chest (in)	Length (in)	Chest (cm)	Length (cm)
XS	34–36	26	86–91	66
S	38–40	27	97–102	69
M	40–42	28	102–107	71
L	42–44	29	107–112	74
XL	44–46	30	112–117	76
2XL	46–49	31	117–124	79
3XL	49–52	32	124–132	81
4XL	52–56	33	132–142	84
5XL	56–60	34	142–152	86

Women's jerseys

W-XS – W-4XLnarrower through the shoulder and waist than the unisex cut

Size	Chest (in)	Length (in)	Chest (cm)	Length (cm)
W-XS	32–34	25	81–86	64
W-S	34–36	26	86–91	66
W-M	36–38	27	91–97	69
W-L	38–40	27	97–102	69
W-XL	40–42	28	102–107	71
W-2XL	42–45	28	107–114	71
W-3XL	45–48	29	114–122	74
W-4XL	48–51	29	122–130	74

Authentic — numbered sizing

36 – 64some Authentic styles are sold by number, not letter

The number is the chest width in inches — so a size 48 measures 48 in across. Use the letter column to translate your usual size.

Number	Equals	Chest (in)	Length (in)	Chest (cm)	Length (cm)
36	XS	36	29	91	74
40	S	40	30	102	76
44	M	44	31	112	79
48	L	48	32	122	81
52	XL	52	33	132	84
56	2XL	56	34	142	86
58	2XL+	58	34	147	86
60	3XL	60	35	152	89
64	4XL	64	36	163	91

Youth jerseys

S – XLsame shape as the adult shirts, scaled down

Age is a guide only — chest measurement is the reliable one.

Size	Age	Chest (in)	Length (in)	Chest (cm)	Length (cm)
S	7–8 yrs	28–30	21	71–76	53
M	9–10 yrs	30–32	23	76–81	58
L	11–12 yrs	32–34	25	81–86	64
XL	13–14 yrs	34–36	26	86–91	66

Preschool & toddler

12M – 7worded by age — this is the range where children grow fastest

Size	Age	Chest (in)	Length (in)	Chest (cm)	Length (cm)
12M	12–18 mo	18–19	13	46–48	33
18M	18–24 mo	19–20	14	48–51	36
24M	2 yrs	20–21	15	51–53	38
2T	2–3 yrs	20–21	15	51–53	38
3T	3–4 yrs	21–22	17	53–56	43
4T	4–5 yrs	22–23	18	56–58	46
5–6	5–6 yrs	23–25	19	58–64	48
7	7 yrs	25–26	20	64–66	51

Fit differs by tier

Tier	Fit	Who it suits
Authentic	Athletic cut, built to the on-court specification	Want exactly what players wear; consider one size up for layering
Swingman	Slightly looser fan cut	Everyday wear, true to size
Replica	Relaxed, lightest fabric	Casual wear and younger fans

Read more on our jersey tiers explained page.

Three tips before you order

Cut for comfort

Basketball jerseys are meant to hang loose. If you want a regular, closer fit, order one size below your usual.

Between sizes?

Go up. The extra room is how the cut is designed to be worn, and it layers over a hoodie in winter without pulling.

Compare, don't guess

Match the numbers to a shirt you already own rather than to your body. Printed names and numbers on the back do not change the fit.

Measurements are taken flat and can vary by roughly 1 in / 2 cm between styles. Youth overlaps preschool at age 7 — in that case Youth S is the slightly longer of the two. Still unsure? Email fanservicehub@outlook.com with your height, usual size and the jersey you are looking at, and we'll tell you which one to take.

FAQ

Should I size up for an NBA jersey?

If you prefer a relaxed fit, are between sizes, or want to layer over a hoodie, size up. For a closer, regular fit go one size below your usual.

Do Authentic jerseys fit differently?

Yes. Authentic jerseys are built to the on-court specification with an athletic cut, so many fans go one size up compared with Swingman. Some Authentic styles use numbered sizing — the number is the chest width in inches.

How do I pick between men's and women's sizing?

Women's sizes carry a W- prefix and are cut narrower through the shoulder and waist. If you usually wear unisex, compare the flat chest measurements in both charts.

What age is a Youth L?

Roughly 11–12 years, but age is only a guide. Measure a shirt that fits your child now and match the chest number — 32–34 in flat for a Youth L.

Are the sizes US or EU?

Our charts show inches and centimetres measured flat on the garment. Compare a jersey you already own rather than converting your usual clothing size.

What if the size I ordered doesn't fit?

Unworn jerseys with tags attached can be returned within 30 days — see the returns page for the full process.

Still need a hand? Email us and we reply within 24 hours on business days.

Click the button to copy the address, or open your mail app.

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