OS1st Merino Plantar Fasciitis Compression Quarter Socks

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The first-ever Plantar Fasciitis sock featuring award-winning patented FS6 technology. A technical performance sock that strengthens the foot structure and prevents Plantar Fasciitis symptom onset as well as overuse injuries. With precisely targeted compression levels and cushioning, the FS4 Plantar Fasciitis sock features Compression Zone Technology that is designed for proper foot support.

Ideal for: Plantar Fasciitis Relief, Foot Fatigue, and Arch/Heel Pain Relief.


  • Crew Height
  • Medium-density cushioning without the bulk
  • Medical Grade Compression with Compression Zone Technology
  • Anatomical fit for left/right foot with Y-Gore Heel
  • Moisture-wicking
  • Anti-bacterial
  • Seamless Construction
  • Merino wool - 100% recycled material, moisture-wicking, added warmth, durable, soft


40% Nylon, 25% Acrylic, 25% Merino wool, 10% Lycra Spandex

Sock Height

Mini Crew Sock

Sock Cushion

Medium Cushion Sock