Short answer: most NFL-style fan jerseys run slightly roomy and fit close to your normal T-shirt size, with a bit of extra length. Order your usual size for a relaxed, everyday fit. Go one size up if you plan to wear a hoodie or jacket underneath on cold game days. Go one size down only if you want a closer, more tailored look.
That covers most people. If you want to get it right the first time, here's how to think about it.
How football jerseys are cut
Football jerseys are designed to be worn over a lot. On the field, that means pads. For fans, it means layers. So the body is usually a little wider than a fitted tee, the sleeves are short and loose, and the hem sits lower than a regular shirt.
That roomier cut is a feature, not a flaw. It's what makes a jersey easy to throw on over a long-sleeve top in November.
Step 1: Measure a shirt you already like
The easiest way to choose a size is to compare against something you already own and enjoy wearing.
- Lay a favourite T-shirt or sweatshirt flat.
- Measure straight across the chest, armpit to armpit.
- Measure the length from the top of the shoulder down to the hem.
- Compare those numbers to the size chart on the product page.
If you're between sizes, think about how you'll wear it. Layering means size up. A cleaner look means stay true to size.
Step 2: Decide how you'll wear it
The same person can wear two different sizes depending on the plan.
- Everyday and casual: your normal T-shirt size. Relaxed but not baggy.
- Cold-weather tailgates: one size up, so a hoodie fits underneath without pulling across the shoulders.
- Oversized streetwear look: one or two sizes up, especially if you like wearing it over leggings or with a belt.
- Close fit: one size down, but only if you won't be layering.
Sizing for women
Many fans of all sizes simply wear a standard adult jersey. If you're used to women's sizing, a good rule of thumb is to go one size down from your usual women's top in a standard adult cut, then check the chest measurement on the chart.
Plenty of women deliberately size up for an oversized look and style the jersey with leggings, denim shorts or a knot at the hip. There's no wrong way to wear it.
Sizing for kids
Kids grow fast, and jerseys get worn hard. Most parents size up one for youth jerseys so it lasts more than one season. The sleeves and length will be a bit long at first, but that's normal and usually looks fine.
Measure their chest the same way as above and check it against the youth chart, not the adult one.
Common fit questions
Do jerseys shrink?
A little, if you put them in a hot dryer. Wash cold, inside out, and air dry, and the fit should stay put. That's another reason not to buy a size too small expecting it to stretch.
Are the sleeves short?
Yes, football jersey sleeves are short by design, often sitting above the elbow. If you want more coverage, layer a long-sleeve tee underneath.
Is the length longer than a T-shirt?
Usually, by a couple of inches. You can tuck the front, knot it, or leave it loose. Taller fans tend to appreciate the extra length.
Quick sizing cheat sheet
- Normal fit: order your usual T-shirt size.
- Layering: one size up.
- Oversized look: one to two sizes up.
- Tight fit: one size down, no layers.
- Kids: one size up to grow into.
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