Os1st FS4 Plantar Fasciitis Crew Compression Sock Black

  • $30.00
    Unit price per 
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Os1st FS4 Plantar Fasciitis Crew Compression Sock Black

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 precise targeted compression levels and cushioning, the FS4 Plantar Fasciitis sock features Compression Zone Technology® that is designed for proper foot support. 

Merino Wool or Ultra-Soft Nylon

Merino Wool - 100% recycled material, moisture-wicking, added warmth, durable, soft

Ultra Soft Nylon -High quality, durable, moisture-wicking treatment with anti-odor treatment

Targeted Conditions

  • Plantar Fasciitis
  • Foot Fatigue
  • Arch/Heel Pain

Performance Features

  • Medical Grade Support
  • Y-Gore heel for anatomical shape
  • Patented Compression Zone Technology®
  • Seamless Construction
  • Extra cushioning without the bulk
  • Anatomical left/right design for perfect fit
  • Anti-bacterial fabric

Comes with one (1) pair of socks per package.

Download technical sheet here.  

Before ordering, use this size chart for accurate fit. 

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The Best Plantar Fasciitis Socks and Sports Compression Foot Sleeves

Our FS4 Plantar Fasciitis Socks provide medical grade orthopedic support. Patent pending Compression Zone Technology relieves and prevents pain.  Get relief from past injuries, plantar fasciitis, chronic heel pain, swollen arthritic ankles and feet, or poor circulation.


4 Zones of Graduated Compression

Zone image

The OS1st® FS4 Plantar Fasciitis Sock has a comfortable, shaped fit.  The high performance design delivers four different zones of compression. This is a product that is comfortable and easy to wear daily. Don’t let bulky and uncomfortable splints keep you from your peak performance.