The OriginUSA Core T-Shirt: Muster Est. 2016 represents the foundation of discipline, leadership, and Extreme Ownership. Built with premium American-made quality, this shirt is designed for those who show up, put in the work, and lead from the front. Featuring the Muster Est. 2016 design, it pays tribute to the leaders who have stepped up, learned, and executed at Echelon Front’s premier leadership event.
Crafted from ultra-soft, durable fabric, this shirt delivers comfort while standing up to the demands of hard training, daily wear, and the relentless pursuit of excellence. Whether you’ve attended Muster or live by its principles, this shirt serves as a reminder that leadership is a skill—one that must be honed, tested, and reinforced every single day.
Lead. Train. Execute. Wear the OriginUSA Core T-Shirt: Muster Est. 2016 and embody the mindset of a true leader.
| 30” - 32” | 34” - 36” | 38” - 40” | 42” - 44” | 46” - 48” | 50” - 52” | 54” - 56” | |
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| 24” - 26” | XS | SM | MD | LG | XL | 2XL | 3XL |
| 28” - 30” | SM | SM | MD | LG | XL | 2XL | 3XL |
| 32” - 34” | MD | MD | LG | XL | 2XL | 2XL | 3XL |
| 36” - 38” | LG | LG | XL | 2XL | 2XL | 3XL | 3XL |
| 40” - 42” | XL | XL | 2XL | 2XL | 3XL | 3XL | 3XL |
| 44” - 46” | 2XL | 2XL | 2XL | 3XL | 3XL | 3XL | 3XL |
| 48” - 50” | 3XL | 3XL | 3XL | 3XL | 3XL | 3XL | 3XL |
