OS1st Plantar Fasciitis

OS1st FS4 Plantar Fasciitis Compression Sock

 in style BLACK


The first ever Plantar Fasciitis no-show sock from OS1st featuring award winning, patented FS6® technology. Wearing the FS4 PF socks during runs or sports activity will aid in preventing PF symptom onset and act as an overall foot health and performance aid. With precise targeted compression levels, the FS4 features Compression Zone Technology® that is designed for proper foot support and injury prevention. In addition, soft moisture-wicking fabric with anti-odor treatment and padding in the right places which creates a technical performance sock that strengthens the foot structure and prevents Plantar Fasciitis, as well as overuse injuries.

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
  • Moisture wicking, extra durable & soft nylong
  • Extra cushioning without the bulk
  • Anatomical left/right design for perfect fit
  • Anti-bacterial fabric


OS1st Size Women's Shoe Size (US) Men's Shoe Size (US)
Small 4-6.5 3-5.5
Medium 7-10.5 6-9.5
Large 11+ 10-13
XL - 13.5+

Popular Plantar Fasciitis


Based on 5 Verified Reviews

These are miracle socks

Luis 3 years ago Verified Purchase

My soles were in pain for days. Within 15 minutes my soles felt like new! I ordered two pairs for curbside. Tested them out on a 20-minute grocery trip. Walked back to the store and picked up two more!These are some of the purchases I've made.

Compression socks

Becky 3 years ago Verified Purchase

Suffer from plantar fasciitis from standing all day and running. Socks help feet feel better and they are also nice looking. Good purchase.