ANDROS
Shop Briefs
Your underwear
is k*lling you.
Most underwear traps heat.
Andros is built to keep you cool.
Shop the Brief
100K+ pairs sold
Try risk-free for 30 days
Wear them at home, and return for a full refund if you don’t love it.
Free shipping & returns
Free shipping in the U.S. on orders $75+, with no-cost, hassle-free returns.
20% off your first order
Enjoy better underwear now. Applies across your entire order, even bundles.
A brief designed for deeper comfort, on any body
From the fiber that adapts to your body, to the fit that extends comfort all day — the Foundation Brief transforms every layer of your underwear.
Foundation Brief
TENCEL™ Modal Fiber
Derived from beech trees. Softer than cotton, with no synthetic, plastic-heavy blends.
Breathable & Moisture-Wicking
Regulates airflow and stays dry all day. No heat trapping. No heavy soak.
Certified Skin-Safe
OEKO-TEX® Standard 100. Tested against 100+ harmful substances.
Premium Comfort. Modern Fit.
Structured to hold shape. Fitted for movement. Built for everyday performance.
Foundation Brief
Foundation Brief - 7 Set
★★★★★
$69.00
($9.86/pair)
Color
Noir / Slate / Deepsea
Size
Size guide
Qty
Checkout — $69.00
$154.00$69.00
Foundation Brief -
7 Set(7 pack)
55% OFF
$22.00
Foundation Brief - Single
$66.00$48.00
Foundation Brief - 3 Set
27% OFF
FAQ
Frequently asked questions
Everything you need to know about the Foundation Brief.
Why not 100% cotton?
Cotton absorbs moisture and holds onto it, leaving you wet and uncomfortable. TENCEL™ Modal beech tree fibers are naturally moisture-wicking and temperature-regulating — keeping you dry, cool, and comfortable all day.
How does the Foundation Brief fit?
The Foundation Brief is designed with a modern, premium fit. Supportive coverage with a comfortable waistband that stays in place without digging in. We recommend ordering your usual size.
What makes TENCEL™ Modal different?
TENCEL™ Modal is derived from sustainably harvested beech trees. The fibers are softer than cotton, naturally breathable, and regulate temperature in real time — keeping you cool when it’s hot and warm when it’s cold.
How should I care for the Foundation Brief?
Machine wash cold with like colors. Tumble dry low or hang to dry. Do not bleach or iron. These care instructions will help maintain the softness and performance of the fiber over time.