Polo Ralph Lauren vs Sunspel: which size fits the same?

In tees, a Polo Ralph Lauren L is closest to a Sunspel XL (the same around). In polos, a Polo Ralph Lauren L is closest to a Sunspel L (1¼″ snugger).

Tees

Polo Ralph Lauren tees measure about 2¼″ more around than Sunspel at the same size. A Polo Ralph Lauren L is closest to a Sunspel XL (the same around).

Polo Ralph LaurenChest · lengthClosest SunspelChest · lengthSunspel is
Polo Ralph Lauren XS34¾″ · 25½″Sunspel XS34¾″ · 26″the same around
Polo Ralph Lauren S37¾″ · 26¼″Sunspel S37″ · 26¾″¾″ snugger
Polo Ralph Lauren M40¾″ · 27″Sunspel L41¾″ · 27¾″1″ roomier
Polo Ralph Lauren L44″ · 27¾″Sunspel XL44″ · 28½″the same around
Polo Ralph Lauren XL48″ · 29¼″Sunspel 3XL48½″ · 30″½″ roomier
Polo Ralph Lauren XXL52″ · 30¾″none close

From Polo Ralph Lauren: Polo Ralph Lauren Classic Fit Jersey Crewneck T-Shirt, Polo Ralph Lauren Custom Slim Fit Jersey Crewneck T-Shirt. From Sunspel: Sunspel Classic T-Shirt. Relaxed and oversized cuts are left out.

Polos

Polo Ralph Lauren polos measure about 1¼″ more around than Sunspel at the same size. A Polo Ralph Lauren L is closest to a Sunspel L (1¼″ snugger).

Polo Ralph LaurenChest · lengthClosest SunspelChest · lengthSunspel is
Polo Ralph Lauren XS34¼″ · 24½″Sunspel XS34¾″ · 25¾″½″ roomier
Polo Ralph Lauren S37¼″ · 25¼″Sunspel S37″ · 26½″the same around
Polo Ralph Lauren M40¼″ · 26″Sunspel M39¾″ · 27¼″½″ snugger
Polo Ralph Lauren L43½″ · 27″Sunspel L42½″ · 28″1¼″ snugger
Polo Ralph Lauren XL47½″ · 28¼″Sunspel XXL47¾″ · 29½″the same around
Polo Ralph Lauren XXL51½″ · 29¾″Sunspel 3XL50¼″ · 30¼″1¼″ snugger

From Polo Ralph Lauren: Polo Ralph Lauren Custom Slim Fit Mesh Polo. From Sunspel: Sunspel Riviera Polo Shirt (Slim Fit). Relaxed and oversized cuts are left out.

More: Polo Ralph Lauren 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.