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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

Why Natural Toe Splay is Important for Runners

Why Natural Toe Splay is Important for Runners

Natural toe splay is the way your toes naturally space out and lay when not confined by tight shoes or socks. Some shoes and socks squeeze the toes into a tighter space that restrains the way they would and should naturally lay, which can eventually affect your balance.
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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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