Mack Weldon vs Next Level: which size fits the same?
In tees, a Mack Weldon L is closest to a Next Level L (1″ roomier). In long sleeves, a Mack Weldon L is closest to a Next Level L (¾″ snugger).
Tees
Next Level tees measure about 1¾″ more around than Mack Weldon at the same size. A Mack Weldon L is closest to a Next Level L (1″ roomier).
| Mack Weldon | Chest · length | Closest Next Level | Chest · length | Next Level is |
|---|---|---|---|---|
| Mack Weldon S | 38″ · 28″ | Next Level S | 37¼″ · 27″ | ¾″ snugger |
| Mack Weldon M | 40″ · 29″ | Next Level M | 40¼″ · 27¾″ | the same around |
| Mack Weldon L | 42″ · 29¾″ | Next Level L | 43″ · 28¾″ | 1″ roomier |
| Mack Weldon XL | 44″ · 30½″ | Next Level L | 43″ · 28¾″ | 1″ snugger |
| Mack Weldon XXL | 46″ · 31″ | Next Level XL | 47″ · 29¾″ | 1″ roomier |
From Mack Weldon: Mack Weldon SILVER Crew Neck T-Shirt, Mack Weldon Pima Crew Neck T-Shirt, Mack Weldon Pima Short Sleeve Henley. From Next Level: Next Level Cotton Tee (3600), Next Level CVC Tee (6210). Relaxed and oversized cuts are left out.
Long sleeves and layers
Mack Weldon and Next Level long sleeves measure about the same at the same size (within ¾″ around). A Mack Weldon L is closest to a Next Level L (¾″ snugger).
| Mack Weldon | Chest · length | Closest Next Level | Chest · length | Next Level is |
|---|---|---|---|---|
| Mack Weldon S | 39″ · 26½″ | Next Level M | 39¼″ · 27¾″ | the same around |
| Mack Weldon M | 41″ · 27¼″ | Next Level L | 42¼″ · 28¾″ | 1¼″ roomier |
| Mack Weldon L | 43″ · 27¾″ | Next Level L | 42¼″ · 28¾″ | ¾″ snugger |
| Mack Weldon XL | 44¾″ · 28½″ | Next Level XL | 46″ · 29¾″ | 1¼″ roomier |
| Mack Weldon XXL | 46¾″ · 29″ | Next Level XL | 46″ · 29¾″ | ¾″ snugger |
From Mack Weldon: Mack Weldon ACE Crew Neck Sweatshirt, Mack Weldon Pima Long Sleeve Crew. From Next Level: Next Level Cotton Long Sleeve Tee (3601). Relaxed and oversized cuts are left out.
More: Mack Weldon sizing · Next Level 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.