Hoodie Sizing and Fabric Weight (GSM), Explained
A hoodie should reach your wrists and let you move freely; its GSM tells you fabric weight, from about 200 for lightweight to 350 and up for heavyweight.
By Elliana SmithContributing writer.
On this page
The short answer
Pick a hoodie by two things: its measurements and its fabric weight. The letter size only gets you close, because sizing varies by brand and region. Compare your own measurements, or a hoodie you already like, with the brand's chart. Then check the GSM figure, if the listing gives one, to see how thick and warm the fabric is.
How a hoodie should fit
For a regular fit, these are the usual checks:
- Sleeves: the cuff reaches your wrist.
- Chest: room to move your arms freely; tight seams that strain or pull mean the size is too small.
- Length: a matter of taste. Body length is measured from the highest point of the shoulder down to the hem, so compare that figure with a hoodie you like.
- Hood: close around the head without pulling when you turn.
An oversized fit is a style choice. It looks deliberate when the hoodie was cut that way; sizing up a regular cut can just look sloppy.
How to measure
Kiwi Sizing's guide gives a simple home method:
- Chest: measure around the widest part of your chest. On a hoodie laid flat, measure across from armpit to armpit and double it.
- Sleeve: with your elbow bent and hand on your hip, measure from the tip of the shoulder to the wrist.
- Body length: from the top of the shoulder down to where you want the hem to sit.
Its sample chart for men's sizes:
| Men's size | Chest |
|---|---|
| S | 34 to 36 in |
| M | 38 to 40 in |
| L | 42 to 44 in |
| XL | 46 to 48 in |
| XXL | 50 to 52 in |
On the same chart, a women's size runs one step smaller for the same chest, so a women's M is 38 to 40 inches. These are sample ranges, so always confirm on the brand's own chart.
What GSM means in hoodies
GSM stands for grams per square meter: the weight of one square meter of the fabric. Makers Row describes a home check: weigh a 10 cm by 10 cm square and multiply by 100, so a 1.8 g square is 180 GSM. To convert ounces per square yard to GSM, multiply by 33.906.
Higher GSM means heavier fabric, not better fabric. Fiber, yarn, knit and finishing decide quality too.
Heavyweight vs midweight hoodie
Garment Printing's weight guide uses these bands:
| Weight | GSM | Suits |
|---|---|---|
| Lightweight | 200 to 280 | Mild weather, travel, layering |
| Midweight | 280 to 350 | Everyday, year round |
| Heavyweight | 350 and up | Cold weather and outdoor use |
The cutoffs differ a little between sources, so read them as rough bands. Choose heavyweight for cold climates and outdoor work, and midweight for one hoodie that works most of the year. The same guide notes that larger sizes, relaxed cuts and zip-ups weigh more than smaller, slimmer pullovers in the same fabric.
How we count
Colors in the chart are read from each hoodie's store listing on Wiki Shopping on October 26, 2026. Of the 246 hoodies listed that day, the chart shows the colors with the most listings. Listings do not give GSM in a form we can count, so the chart does not show fabric weight. Counts change as listings are added or removed. Browse the range from clothing, shoes and jewelry.