The Foundation Shirt is everything you need in a training tee — and nothing you don’t.
With next-level softness, the right amount of stretch, and performance tech like moisture-wicking and anti-odor treatment, it’s built to move with you through every part of your day. Lightweight, breathable, and endlessly comfortable, it delivers in your hardest sessions and stays sharp when the work is done.
THE ALL-DAY ACTIVE SHIRT
Our commitment to perfection isn’t just about looks — it runs thread-deep. We scour the earth, searching for the finest premium materials, durable finishes, technical treatments, and advanced construction techniques to build products on an unbreakable foundation of functionality and longevity.
COMFORT THAT PERFORMS
Built for athletes who don’t stop moving, the Foundation Shirt delivers true performance in the gym — then easily shifts into the rest of your day without missing a beat. With its clean design and all-day comfort, it's the shirt that keeps up with your full routine, no outfit change required.
COMFORT THAT PERFORMS
Built for athletes who don’t stop moving, the Foundation Shirt delivers true performance in the gym — then easily shifts into the rest of your day without missing a beat. With its clean design and all-day comfort, it's the shirt that keeps up with your full routine, no outfit change required.
FEATURE-PACKED
The Foundation Shirt combines an ultra-soft feel with a clean, minimalist look that works anywhere. The mid-weight fabric is breathable, smooth, and built to hold its shape wear after wear. With a simple design and clean lines, it’s the tee you’ll reach for every day — training or not.
FEATURE-PACKED
The Foundation Shirt combines an ultra-soft feel with a clean, minimalist look that works anywhere. The mid-weight fabric is breathable, smooth, and built to hold its shape wear after wear. With a simple design and clean lines, it’s the tee you’ll reach for every day — training or not.
BUILT TO PERFORM
The Foundation Shirt may feel soft, but it performs hard. Quick-drying, moisture-wicking fabric pulls sweat away fast to keep you dry when the work gets intense. Add in our Odorblock treatment, and you've got a shirt that keeps you fresh from wake-up to wind-down.
BUILT TO PERFORM
The Foundation Shirt may feel soft, but it performs hard. Quick-drying, moisture-wicking fabric pulls sweat away fast to keep you dry when the work gets intense. Add in our Odorblock treatment, and you've got a shirt that keeps you fresh from wake-up to wind-down.
MADE TO MOVE
A hint of stretch makes a big difference. The Foundation Shirt flexes naturally with your movement, never bouncing, bunching, or sticking when the heat turns up. Whether you're lifting, running, or reaching overhead, it stays dialed in and distraction-free—no adjusting, no fuss, just flow.
MADE TO MOVE
A hint of stretch makes a big difference. The Foundation Shirt flexes naturally with your movement, never bouncing, bunching, or sticking when the heat turns up. Whether you're lifting, running, or reaching overhead, it stays dialed in and distraction-free—no adjusting, no fuss, just flow.
ATHLETE-LED DESIGN
We obsessed over the details to build a shirt that feels good enough to wear all day and performs hard when it counts. From fabric weight to stretch ratio, every element was dialed to balance comfort and function without compromise. The Foundation Shirt was designed to be your daily go-to — the piece you reach for whether you're training, commuting, or catching your breath between. It wears like your favorite tee but performs like your most trusted gear. Built to pair with the Foundation Short, it's a core piece for guys who train to live.