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. 

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

The OS1st® 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.

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.