Vintage Modern Cal Poly Mustangs "Proud Grandpa" T-Shirt - M
Some shirts are about the roar of the crowd, and some are about the quiet pride felt from the stands. This one's for the grandpas who've watched their own go on to do great things as a Cal Poly Mustang. Featuring the school's bold horse head logo, this tee is a heartfelt declaration of support from the family section. It's less about the final score and more about the journey, a comfortable cotton testament to family legacy and collegiate achievement. Wear it with the kind of pride that only a grandpa knows.
The Faded Vibes Sizing Chart
Now that you have your measurements, here’s how we translate the pit-to-pit number into the modern sizes you see on our product pages.

Find Your Fit
Vintage sizing is all over the place. A "Large" from the 80s fits way different than one from today, and years of washing and wearing can change a shirt's shape. That's why we ignore the original tag and hand-measure every single shirt we sell.
Want to be sure? The best way is to compare our measurements to a favorite t-shirt you already own. Our Vintage T-Shirt Sizing Guide shows you exactly how.