Find Your Perfect Size & Fit

Sizing Calculator & Measurement Guide

The Muscle Fit Basics Measurements Guide

Calculate Your Perfect Size

Start by using our sizing calculator tool below to find your recommended t-shirt size. Simply input your 'height' and 'weight' and in seconds we'll be able to tell you our recommended t-shirt size for Muscle Fit Basics apparel.

After you've used the sizing calculator and calculated your "recommended size", go ahead and explore our perfect fit t-shirt collection. All of our t-shirts are handmade, perfectly fitted and built to last and come with a 365-day guarantee.

The Only T-Shirt Worth Wearing

Perfectly fitted, unbelievably comfortable and built to last. We designed this tee to be your go-to t-shirt whatever the occasion.


"The most comfortable and best fitting t-shirt in the world."

See How Customers Are Enjoying Their Upgraded Basics