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“Oh-ess-first”

Performance Socks and Compression Bracing

Relief, Prevention, Recovery

Stay active with OS1st performance socks and compression bracing made with our patented Compression Zone Technology and designed together with podiatrists, athletes, and real people.



Socks with Purpose

Find the sock that matches your purpose from condition specific (like our Plantar Fasciitis socks) to lifestyle specific (like The Pickleball Sock).

Compression Bracing

Do what you love without pain getting in the way with the flexible fit and support of our patented Compression Zone Technology.


As Seen On

Day in the life as someone who is Pickleball-obsessed

Day in the life as someone who is Pickleball-obsessed

I’ll never forget my first game of pickleball. I was visiting friends in Austin. We were at a restaurant and it had an outdoor pickleball court (and yes those do exist). 
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How do Plantar Fasciitis socks and sleeves work?

How do Plantar Fasciitis socks and sleeves work?

Plantar Fasciitis is a common cause of foot and heel pain which can be brought on by activities such as running, consistent standing on your feet for long periods of time, or other repetitive motions that put pressure on the arch of your foot.
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A woman shown running

How to return to exercise safely after injury

Two common scenarios happen when returning to training following an injury: one, you remember where you were before your injury and jump right back into it, or two, you plan to resume workouts at a shorter distance or use lighter weights, but when you feel good, you decide on the fly to increase.
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