88% matchReigning Champ
Logo-light heavyweight fleece, domestic (Canadian) sewing
What changes: More athletic/gym framing and higher price per piece
Brand profile
San Francisco label making durable, entirely US-made basics, best known for its heavyweight full-zip hoodie.
18 brands like American Giant like Reigning Champ, Province of Canada, Velva Sheen →

Cotton is grown and spun in the US, then cut and sewn at partner factories in the Carolinas — a full supply chain the brand campaigns on publicly.
The full-zip hooded sweatshirt launched the label and went viral as a best-in-class hoodie; heavyweight fleece still anchors the range.
T-shirts, sweatpants, flannels, denim and women's knitwear sell mainly through the brand's own site, keeping US-made goods in the mid tier.
Overall fit
runs small
American Giant's heavyweight basics are known for a substantial, structured build that fits trim and athletic, with many shoppers finding them snug through the chest and shoulders.
Tip: Consider sizing up if you're between sizes or want a relaxed fit, as the heavyweight fabric fits close and slims further after washing.
High confidence · based on 25 sources
By category
| Category | Runs | Shape | Size advice |
|---|---|---|---|
| Trousers & pants | true to size | regular | Take your usual size in sweatpants and joggers. |
| Hoodies & sweatshirts | runs small | structured, athletic and slim through chest and shoulders | Size up if you want room to layer or a looser drape, as the classic full-zip fits close and firm. |
| Shirts & overshirts | slightly small | regular to slim | Size up if you prefer a roomier flannel or plan to layer. |
| Jeans & denim | true to size | regular | Order your normal waist size, allowing for some rigidity in the heavier denim. |
| T-shirts & graphic tees | slightly small | slim, tailored through the torso | Order your usual size for a fitted look or size up for a relaxed fit. |
Directional fit consensus summarized from public sources with AI — a starting point, not a guarantee. Confirm with the product's own measurements before buying.
88% matchLogo-light heavyweight fleece, domestic (Canadian) sewing
What changes: More athletic/gym framing and higher price per piece
82% matchMade-at-home basics, no logos, sweats and tees
What changes: Broader into kidswear and home goods, lighter weights
76% matchUS-made tubular-knit tees and sweats, heritage cuts
What changes: Vintage-repro focus rather than modern engineered fleece
70% matchHeavyweight American basics and denim from a small label
What changes: More streetwear/running crossover, less supply-chain story
American Giant runs small. Consider sizing up if you're between sizes or want a relaxed fit, as the heavyweight fabric fits close and slims further after washing. American Giant's heavyweight basics are known for a substantial, structured build that fits trim and athletic, with many shoppers finding them snug through the chest and shoulders.
American Giant's heavyweight basics are known for a substantial, structured build that fits trim and athletic, with many shoppers finding them snug through the chest and shoulders. Overall shape: structured and slim through the body.
American Giant trousers & pants fits true to size. Take your usual size in sweatpants and joggers. Shape: regular.
American Giant hoodies & sweatshirts runs small. Size up if you want room to layer or a looser drape, as the classic full-zip fits close and firm. Shape: structured, athletic and slim through chest and shoulders.
American Giant shirts & overshirts fits slightly small. Size up if you prefer a roomier flannel or plan to layer. Shape: regular to slim.
American Giant makes casual basics entirely in the United States, from domestically grown and spun cotton to cutting and sewing at partner factories in the Carolinas. The range centers on heavyweight fleece — the full-zip hooded sweatshirt that launched the brand and drew viral attention as a best-in-class hoodie — alongside T-shirts, sweatpants, flannel shirts, denim, and women's knitwear and dresses. Founder Bayard Winthrop, previously president of Chrome Industries, still leads the privately held company, which sells mainly direct-to-consumer online and campaigns publicly for rebuilding domestic apparel manufacturing.