What is the ratio of duckpower to horsepower? How about horsepower to whalepower? It turns out there really is math for this stuff! What began in my head as a wordplay on Porsche nomenclature, is now a shirt that looks serious, but is bound to bring smiles from those in the know.
Printed on our highest quality SUPER-soft sueded heather gray tee. 4.2-oz. 30 singles for extreme softness. Satin Label.
Size Chart:
| XS | S | M | L | XL | 2XL | 3XL | |
| HPS length | 27 | 28 | 29 | 30 | 31 | 32 | 33 |
| Bust 1" below armhole | 17 1/2 | 19 | 20 1/2 | 22 | 24 | 26 | 28 |
![](http://pinterest.com/pin/create/button/?url=https%3A%2F%2Fcarpegear.com%2Fproducts%2Fduckpower-premium-t-shirt&media=http://carpegear.com/cdn/shop/files/Whalepower_1024x1024.jpg?v=1689265777&description="Duckpower" Premium T-shirt){kind=link}