Mack Weldon vs Polo Ralph Lauren: which size fits the same?
In polos, a Mack Weldon L is closest to a Polo Ralph Lauren L (2″ snugger).
Polos
Mack Weldon polos measure about 1½″ more around than Polo Ralph Lauren at the same size. A Mack Weldon L is closest to a Polo Ralph Lauren L (2″ snugger).
| Mack Weldon | Chest · length | Closest Polo Ralph Lauren | Chest · length | Polo Ralph Lauren is |
|---|---|---|---|---|
| Mack Weldon S | 41″ · 27½″ | Polo Ralph Lauren M | 40¼″ · 26″ | ¾″ snugger |
| Mack Weldon M | 43″ · 28½″ | Polo Ralph Lauren L | 43½″ · 27″ | ½″ roomier |
| Mack Weldon L | 45½″ · 29¾″ | Polo Ralph Lauren L | 43½″ · 27″ | 2″ snugger |
| Mack Weldon XL | 48″ · 30½″ | Polo Ralph Lauren XL | 47½″ · 28¼″ | ½″ snugger |
| Mack Weldon XXL | 50″ · 31″ | Polo Ralph Lauren XXL | 51½″ · 29¾″ | 1½″ roomier |
From Mack Weldon: Mack Weldon Heavyweight Slub Polo, Mack Weldon SILVER Pique Polo. From Polo Ralph Lauren: Polo Ralph Lauren Custom Slim Fit Mesh Polo. Relaxed and oversized cuts are left out.
More: Mack Weldon sizing · Polo Ralph Lauren sizing
Get your exact size in any of these
Add three shirts you own that fit well. FitCard compares their real measurements with every shirt here and tells you the one size to buy, and why, in terms of your own shirts. Free, no tape measure.
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.