Cotton, Fleece or Heavyweight: Which Hoodie Fabric to Pick

For warmth, pick a sherpa or fleece-lined hoodie; for everyday wear, a cotton and polyester fleece; for a thicker feel, a heavyweight one by the stated weight, since no standard defines “heavyweight”. To keep a hoodie’s size, choose a blend and keep tumble drying short.

In any size, the fabric decides how warm a hoodie is and whether it still fits after a few washes. The pages in this section go deeper.

Which fabric does what?

Real examples from makers’ own pages: Gildan’s 18500 is 50% cotton and 50% polyester in solid colors and 40% cotton in heathers, with a brushed interior. Carhartt’s K121 is 50% cotton and 50% polyester in most colors and 70% cotton in Heather Gray. Champion describes its big and tall Powerblend as midweight fleece made to reduce pilling and shrinkage.

How to read fabric weight

Hoodie weight is listed in ounces per square yard (oz/yd²) or grams per square meter (g/m², often called GSM). The conversion is simple arithmetic: one ounce is 28.35 grams and one square yard is 0.836 square meters, so 1 oz/yd² is about 33.9 g/m².

Worked example: Gildan lists its 18500 at 8.0 oz/yd². 8.0 × 33.9 is about 271 g/m².

Labels like midweight and heavyweight are the maker’s own words. Carhartt lists its K121, which it calls midweight, at 10.5 ounces, and its women’s Clarksburg hoodie, which it describes as heavyweight fleece, also at 10.5 ounces. So compare numbers, not names.

Heavyweight and cotton hoodies in 3XL and up

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• HeavyweightBrowse →
• 100% cottonBrowse →
• Work hoodiesBrowse →

Will it shrink?

Cotton can shrink, and the dryer is where it happens. In research reported by Textile World in December 2005, Cotton Incorporated found that tumbling, not heat, shrank cotton: a load of 100% cotton knit dried with no heat shrank more than 20% after 45 minutes of tumbling, and loads at 150°F and 200°F shrank the same amount, only faster. Whirlpool names hot water, agitation in the washer and overdrying as the causes, and notes that cotton blended with polyester is less likely to shrink.

The two sources agree on the practical part: less tumbling. Cotton Incorporated’s advice in that report was to tumble for no more than five minutes to remove wrinkles, then hang to dry.

Which hoodie is warmest?

A pile lining such as sherpa adds a second, lofty layer inside the hoodie, which is why sherpa-lined hoodies are the warm end of the range. A heavier unlined fleece comes next. The sherpa and fleece-lined page explains what sherpa is and how it compares with fleece.

Sherpa and fleece-lined hoodies, 3XL and 3X up

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• Big and tall sherpaBrowse →
• Women's plus sherpaBrowse →
• Fleece-linedBrowse →

Pilling, static and fading

Pilling is the little balls of fiber that form where a hoodie rubs, under the arms and along the sides. Wikipedia’s polar fleece entry notes that lower-quality polyester fleece is prone to pilling and that fleece readily builds up static, which pulls in lint and pet hair. Makers address this directly: Gildan describes its 18500 as having reduced pilling, and Champion says its big and tall Powerblend is made to reduce pilling and shrinkage.

A few habits keep a hoodie looking newer for longer:

• Wash it inside out, which protects the outer face and any printed design from rubbing in the drum.
• Wash with like colors. The FTC’s care rule expects a label to say “wash with like colors” or “wash separately” when a garment is not colorfast, so take that line seriously on dark or bright hoodies.
• Skip long hot dryer cycles, for both cotton and polyester fleece.
• Use a fabric shaver on pills once they appear; it is gentler than pulling them.

Cotton or blend?

There is no wrong answer, only a trade. A higher cotton share feels soft and natural but is the one to keep out of the dryer. A cotton and polyester blend is the easier choice if you want the hoodie to stay the size you bought: Whirlpool notes that blends are less likely to shrink. Many popular hoodies are blends, from Gildan’s 50/50 solids to Carhartt’s 50/50 K121.

Does fabric change the fit?

Fabric can change fit as well as warmth. A lining takes up some room inside, so with a lined hoodie, check the chest measurement in the listing if the seller gives one. If you are between sizes, an unlined blend in your usual size is the safest pick, and the size guide has the charts. For gifts, the one-size blanket hoodies are the coziest of all.