J.Crew vs Port Authority: which size fits the same?
In polos, a J.Crew L is closest to a Port Authority M (1″ snugger).
Polos
Port Authority polos measure about 2″ more around than J.Crew at the same size. A J.Crew L is closest to a Port Authority M (1″ snugger).
| J.Crew | Chest · length | Closest Port Authority | Chest · length | Port Authority is |
|---|---|---|---|---|
| J.Crew XS | 34¾″ · 26″ | Port Authority XS | 36½″ · 27½″ | 1¾″ roomier |
| J.Crew S | 37¾″ · 26″ | Port Authority XS | 36½″ · 27½″ | 1¼″ snugger |
| J.Crew M | 40¾″ · 26¾″ | Port Authority S | 39½″ · 28½″ | 1¼″ snugger |
| J.Crew L | 43½″ · 28″ | Port Authority M | 42½″ · 29½″ | 1″ snugger |
| J.Crew XL | 46½″ · 29″ | Port Authority L | 45½″ · 30½″ | 1″ snugger |
| J.Crew XXL | 49½″ · 29½″ | Port Authority XL | 48½″ · 31¼″ | 1″ snugger |
| J.Crew 3XL | 52½″ · 29¼″ | Port Authority XXL | 51½″ · 32¼″ | 1″ snugger |
From J.Crew: J.Crew Washed Piqué Polo Shirt, J.Crew Polo Shirt in Pima Cotton. From Port Authority: Port Authority Silk Touch Polo (K500), Port Authority Dry Zone UV Micro-Mesh Polo (K110), Port Authority Core Classic Pique Polo (K100). Relaxed and oversized cuts are left out.
More: J.Crew sizing · Port Authority 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.