Size Guide
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 down 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.

Men's / Unisex Jerseys
XS - 5XLThe default cut for most of the store. Loose through the body by design, with a 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 |
| XXL | 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 |
Big & Tall
1XB - 6XB / XLT - 6XTTwo different things: B sizes add width, T sizes keep the width and add 2-3 in of length. Both are cut from the same shoulders down.
| Size | Type | Chest (in) | Length (in) | Chest (cm) | Length (cm) |
|---|---|---|---|---|---|
| 1XB | Big | 46-48 | 31 | 117-122 | 79 |
| 2XB | Big | 50-52 | 32 | 127-132 | 81 |
| 3XB | Big | 54-56 | 32 | 137-142 | 81 |
| 4XB | Big | 58-60 | 33 | 147-152 | 84 |
| 5XB | Big | 62-64 | 33 | 157-163 | 84 |
| 6XB | Big | 66-68 | 34 | 168-173 | 86 |
| MT | Tall | 40-42 | 31 | 102-107 | 79 |
| LT | Tall | 42-44 | 32 | 107-112 | 81 |
| XLT | Tall | 44-46 | 33 | 112-117 | 84 |
| 2XT | Tall | 46-49 | 34 | 117-124 | 86 |
| 3XT | Tall | 49-52 | 35 | 124-132 | 89 |
| 4XT | Tall | 52-56 | 36 | 132-142 | 91 |
| 5XT | Tall | 56-60 | 37 | 142-152 | 94 |
| 6XT | Tall | 60-64 | 38 | 152-163 | 97 |
Authentic - Numbered Sizing
36 - 64Some Authentic styles are sold by number instead of 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 | XXL | 56 | 34 | 142 | 86 |
| 58 | XXL+ | 58 | 34 | 147 | 86 |
| 60 | 3XL | 60 | 35 | 152 | 89 |
| 64 | 4XL | 64 | 36 | 163 | 91 |
Youth Jerseys
S - XLCut in the same shape as the adult shirts, just 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
2T - 7 / 12M - 24MWorded by age rather than letter on purpose - this is the range where children grow fastest, so measure a shirt that fits today and match the chest.
| 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 |
Women's Jerseys
W-XS - W-4XLListed with a W- prefix so they are easy to spot in the size selector. Narrower 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-XXL | 42-45 | 28 | 107-114 | 71 |
| W-3XL | 45-48 | 29 | 114-122 | 74 |
| W-4XL | 48-51 | 29 | 122-130 | 74 |
Basketball jerseys are meant to hang loose. If you want a regular, closer fit, order one size below your usual.
Go up. The extra room is how the cut is designed to be worn, and it layers over a hoodie in winter without pulling.
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.