Port Authority Core Classic Pique Polo (K100): measurements by size
60% cotton, 40% polyester · regular fit
Measurements
| Size | Chest (around) | Length |
|---|---|---|
| XS | 36¼″ (37″ new) | 27″ (28″ new) |
| S | 39¼″ (40″ new) | 27¾″ (29″ new) |
| M | 42¼″ (43″ new) | 28¾″ (30″ new) |
| L | 45″ (46″ new) | 29¾″ (31″ new) |
| XL | 48″ (49″ new) | 30¾″ (32″ new) |
| XXL | 51″ (52″ new) | 31¾″ (33″ new) |
| 3XL | 55″ (56″ new) | 32¼″ (33½″ new) |
60% cotton, so the main numbers are after a dryer; "new" is as sold.
If this shirt fits you, the same fit in other polos
Find the size you wear in the Port Authority Core Classic Pique Polo (K100) and read across: the size in each shirt whose chest is closest, and how it compares.
| Shirt | If your M fits | If your L fits | If your XL fits |
|---|---|---|---|
| adidas Performance Piqué Polo (A430) | M 1¼″ roomier | L 1½″ roomier | L 1½″ snugger |
| adidas Performance Polo (A230) | M 1¼″ roomier | L 1½″ roomier | L 1½″ snugger |
| adidas Ultimate365 Solid Polo (A514) | M 1¼″ roomier | L 1½″ roomier | L 1½″ snugger |
| Asket The Pique Polo | L the same around | XL the same around | XXL 1″ snugger |
| Columbia Tech Trail Utility Polo (211856) | M ¾″ roomier | L 1″ roomier | XL 2″ roomier |
| Epoleatries Color Block Golf Polo | M 1¼″ roomier | L ½″ roomier | XL ¾″ roomier |
| Fred Perry M3600 Twin Tipped Polo | L 1¼″ snugger | XL the same around | XXL 1″ snugger |
| J.Crew Polo Shirt in Pima Cotton | M 1½″ snugger | L 1½″ snugger | XL 1½″ snugger |
| J.Crew Washed Piqué Polo Shirt | M 1½″ snugger | L 1½″ snugger | XL 1½″ snugger |
| LuxMania Casual Cotton Polo with Pocket | M ½″ snugger | L 1″ snugger | XL 1″ snugger |
| Mack Weldon Heavyweight Slub Polo | S the same around | L 1″ roomier | XL the same around |
| Mack Weldon Pima T-Shirt Polo | M the same around | XL 1″ roomier | XXL the same around |
| Mack Weldon SILVER Pique Polo | M the same around | L the same around | XL the same around |
| Nike Dri-FIT Legacy Polo | M 1″ roomier | L 1½″ roomier | L 1½″ snugger |
| Nike Dri-FIT Micro Pique 2.0 Polo | M 1″ roomier | L 1½″ roomier | L 1½″ snugger |
| Nike Dri-FIT Vertical Mesh Polo | M ¾″ roomier | L 1½″ roomier | L 1½″ snugger |
| Nike Dri-FIT Victory Solid Polo | S 1½″ snugger | L 2″ roomier | L 1″ snugger |
| Nike Dry Essential Solid Polo | S 1½″ snugger | M 1″ snugger | L 1″ snugger |
| Polo Ralph Lauren Classic Fit Mesh Polo | M 1″ roomier | L 1½″ roomier | L 1½″ snugger |
| Polo Ralph Lauren Custom Slim Fit Mesh Polo | L 1½″ roomier | L 1½″ snugger | XL ½″ snugger |
| Port Authority Dry Zone UV Micro-Mesh Polo (K110) | M the same around | L ½″ roomier | XL ½″ roomier |
| Port Authority Silk Touch Polo (K500) | M ½″ roomier | L 1½″ roomier | L 1½″ snugger |
| Sport-Tek Micropique Sport-Wick Polo (ST650) | M 1¼″ roomier | L 1½″ roomier | XL 1½″ roomier |
| Sunspel Riviera Polo Shirt (Slim Fit) | L the same around | XL the same around | XXL the same around |
| The North Face Ambition Polo | M the same around | L the same around | XL 1″ roomier |
| TravisMathew Bayfront Solid Polo | M ¾″ snugger | L ½″ snugger | XL ½″ snugger |
| TravisMathew Glenview Solid Polo | M ¾″ snugger | L ½″ snugger | XL ½″ snugger |
| TravisMathew Onward Polo | M ¾″ snugger | L ½″ snugger | XL ½″ snugger |
| Under Armour Playoff 3.0 Polo | M the same around | L the same around | XL the same around |
| Under Armour Tech Polo (1370399) | M 1¼″ roomier | L 1½″ roomier | XL 1½″ roomier |
| Uniqlo AIRism Cotton Pique Polo Shirt | M ½″ roomier | L ½″ roomier | XL ½″ roomier |
| Uniqlo DRY Pique Polo Shirt | S ½″ roomier | M the same around | L the same around |
| Uniqlo DRY-EX Polo Shirt | M 1¼″ snugger | L 1″ snugger | XL 1″ snugger |
More: Does Port Authority run big or small?
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.