adidas vs Sunspel: which size fits the same?

In polos, an adidas L is closest to a Sunspel XL (1¼″ snugger).

Polos

adidas polos measure about 4½″ more around than Sunspel at the same size. An adidas L is closest to a Sunspel XL (1¼″ snugger).

adidasChest · lengthClosest SunspelChest · lengthSunspel is
adidas XS37¾″ · 28″Sunspel S37″ · 26½″¾″ snugger
adidas S40¼″ · 28¾″Sunspel M39¾″ · 27¼″the same around
adidas M43½″ · 29½″Sunspel L42½″ · 28″1″ snugger
adidas L46½″ · 30½″Sunspel XL45¼″ · 28¾″1¼″ snugger
adidas XL49¾″ · 31¼″Sunspel 3XL50¼″ · 30¼″½″ roomier
adidas XXL53½″ · 32″none close
adidas 3XL57½″ · 33″none close

From adidas: adidas Ultimate365 Solid Polo (A514), adidas Performance Polo (A230), adidas Performance Piqué Polo (A430). From Sunspel: Sunspel Riviera Polo Shirt (Slim Fit). Relaxed and oversized cuts are left out.

More: adidas sizing · Sunspel sizing

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Garment measurements: the shirt itself, chest all the way around and length from shoulder to hem, from each brand's own chart or wholesale spec sheet, checked November 2026. Shirts with half or more cotton are shown as they come out of a dryer (about 2% less around and 4% shorter). Brands change their cuts, so check the shop's chart before you buy.