Support. Locked In.
Performance underwear engineered to stay in place, no matter how you move.
Early access only. No spam.
Join early for updates, priority access, and the first opportunity to purchase.
WHY 2B1S EXISTS
Why we're building this
Most underwear is designed for how it looks on a hanger
2B1S is built for how it performs when you actually move
Shifting, riding up, and constant adjustment aren't normal - they're design failures
We’re engineering a better foundation for men who train, work, travel, and live in motion
MEET THE CORELOCK™ SUPPORT SYSTEM
CoreLock™ isn’t a pouch. It’s a system. A structural approach designed to keep support stable through movement without bulk, squeeze, or constant readjustment.
Support that moves with you
Geometry designed to stay put
Stability without distraction
A system designed to keep everything where it belongs
BUILT FOR HOW YOU MOVE
PERFORMANCE
- Training
- High output
- Maximum hold
EVERYDAY
- Work
- Travel
- All-day comfort
One system. Tuned for two realities.
Trust Without Hype
Built in Public. No Gimmicks Body
Built in PWe’re building 2B1S deliberately through design, sampling, and real testing. No rush. No promises we can’t verify. Just disciplined progress toward a better foundation for men who move.
Design
Sampling
Testing
Launch
Founding Members Get First Access
- Early access to first drops
- Priority window before public release
- Updates as we build, refine, and test
- No noise. No gimmicks.
FAQ
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Get early access before the first drop goes public.