Size Guide
Last updated: August 7, 2026
Our jerseys follow standard US unisex apparel sizing. Every item is made to order, so please choose your size carefully — a custom item cannot be exchanged because the wrong size was selected. Use the measurements below rather than the letter size you normally buy.
How to measure
- Your chest — measure around the fullest part of your chest, under the arms, keeping the tape level. Match that number to the “Body chest” column.
- Garment chest (flat) — if you prefer to compare against a jersey you already own, lay it flat and measure straight across from armpit to armpit. Match that to the “Garment chest, flat” column.
- Body length — measured from the highest point of the shoulder straight down to the bottom hem.
- Between two sizes? Size up. Our jerseys have a relaxed athletic fit.
Garment measurements are taken flat and have a tolerance of about 1 inch (2.5 cm), because each item is cut and printed individually.
Adult jerseys — baseball, football & basketball
| Size | Body chest (in) | Garment chest, flat (in) | Length (in) | Body chest (cm) | Garment chest, flat (cm) | Length (cm) |
|---|---|---|---|---|---|---|
| S | 36 – 38 | 18 | 28 | 91 – 97 | 46 | 71 |
| M | 39 – 41 | 20 | 29 | 99 – 104 | 51 | 74 |
| L | 42 – 44 | 22 | 30 | 107 – 112 | 56 | 76 |
| XL | 45 – 48 | 24 | 31 | 114 – 122 | 61 | 79 |
| 2XL | 49 – 52 | 26 | 32 | 124 – 132 | 66 | 81 |
| 3XL | 53 – 56 | 28 | 33 | 135 – 142 | 71 | 84 |
Youth & kids jerseys
| Size (age) | Body chest (in) | Garment chest, flat (in) | Length (in) | Body chest (cm) | Garment chest, flat (cm) | Length (cm) |
|---|---|---|---|---|---|---|
| YXS (4–5) | 24 – 26 | 12.5 | 17.5 | 61 – 66 | 32 | 44 |
| YS (6–7) | 26 – 28 | 13.5 | 19.5 | 66 – 71 | 34 | 50 |
| YM (8–10) | 29 – 31 | 15 | 21 | 74 – 79 | 38 | 53 |
| YL (12–14) | 32 – 34 | 16.5 | 23 | 81 – 86 | 42 | 58 |
| YXL (16–18) | 35 – 37 | 18 | 24.5 | 89 – 94 | 46 | 62 |
Basketball jersey & shorts sets
Sets are sold as a matched pair. The jersey follows the adult table above; the shorts have an elasticated pull-on waist with a drawcord and fit the waist sizes below (measured unstretched).
| Size | Waist (in) | Waist (cm) |
|---|---|---|
| S | 28 – 30 | 71 – 76 |
| M | 30 – 32 | 76 – 81 |
| L | 32 – 34 | 81 – 86 |
| XL | 34 – 36 | 86 – 91 |
| 2XL | 36 – 40 | 91 – 102 |
| 3XL | 40 – 44 | 102 – 112 |
Fabric, fit and care
- Fabric: 100% polyester mesh or interlock, depending on the style — lightweight, breathable and slightly stretchy across the body.
- Fit: unisex athletic cut. Women who prefer a closer fit usually size down one letter.
- Print: all-over sublimation. The design is dyed into the fabric, so it will not crack or peel.
- Care: machine wash cold on a gentle cycle, inside out, with like colours. Do not bleach. Hang dry — do not tumble dry on high heat. Do not iron directly on the print.
Still not sure?
Email support@84designwear.com with your usual size and the product link and we will recommend a size before you order. We reply within 24 hours, Monday to Saturday, 9:00 AM – 5:00 PM EST.
How sizing is handled after delivery is covered in our Returns, Refunds & Replacement Policy.