OS1st

Myth: Hot spots just happen on long runs.
Fact: They happen in the same spots every time.

Ball, heel, toes — the exact places where shear and sweat spike together. They're not random, and they're not your fault. They're predictable. And predictable means preventable.

We build for where your feet actually struggle.

Myth: "Performance" is just a thinner sock and a louder logo.
Fact: Performance is engineered.

Dry feet. No slipping. No blisters at mile 20. None of that is luck — it's built in on purpose, long before the sock reaches your foot. The thin sock with the loud logo might look the part. Looking like performance and performing are two very different things.

We don't decorate socks. We engineer them.

Myth: Blisters are bad luck.
Fact: They're physics.

Your skin shears against your sock thousands of times a run, and wet skin gives out faster. That's not luck — that's a known cause with a known fix. We engineer to break the chain before it ever starts.

Stop blaming the blister gods. Start blaming the sock.

Rugged where it counts. Comfortable where it matters.

Built for the long days and rough ground: reinforced durability that lasts, industry-leading moisture wicking that keeps feet dry, and merino temperature regulation that holds steady mile after mile. Tough on terrain. Easy on your feet.

Go rugged. Stay comfortable.

Hot climb, cold descent, wet ground... Your feet feel all of it. ..Unless they don't.

Comfort that adapts is merino doing what merino does best: reinforced durability, industry-leading moisture wicking, and temperature regulation that adjusts as conditions change. One sock, every condition the trail throws at you.

As the terrain changes, your comfort doesn't have to.

Comfort that travels light, wherever the trail goes.

Merino isn't just warmth — it's reinforced durability, industry-leading moisture wicking, and natural temperature regulation that keeps your feet dry and comfortable across a whole day outside. Less in your pack, more on your feet.

Pack light. Go far.

For the guys who “don’t do foot care”... Dermasox count, and no one has to know ;)

Bring Your Kids to Work Day at OS1st was quite the occasion! 🥴🤭
Retailers - If you are one of the lucky ones to receive your order in a "personalized" shipping box, please share with us! 🤩🫶

Comfort that moves with you, not against you.

Your feet flex, swell, and shift as you move. A sock built around a single fixed shape gives up. One engineered with targeted compression, a secure, supportive fit, and seamless comfort moves with you through every position, every mile, every day.

Wherever the movement takes you, your feet are with you.