FS4 Merino wool
FS4 Merino wool
FS4 Merino wool
FS4 Merino wool
FS4 Merino wool
FS4 Merino wool
FS4 Merino wool
FS4 Merino wool

FS4 Merino wool

Regular price $44.90
Unit price  per 
Shipping calculated at checkout.

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

Product Description

FS4 Merino Wool Plantar Fasciitis Socks provide excellent thermal properties as being cool in the summer while warm in the winter. With outstanding durability and being flexible, soft, and containing lightweight fibers these are perfect for all seasons.

Wearing a properly made compression sock is one of the best ways to reduce swelling, improve circulation, and relieve foot pain. FS4socks are made with seamless, soft moisture-wicking fabric with anti-odor treatment and padding in the right places to create a foot health sock with orthotic benefits.

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.

Product comes with one (1) pair of socks per package.

Product Features

  • PF prevention & recovery
  • Medical Grade Support
  • Y-Gore heel for anatomical shape
  • Seamless Construction
  • Anatomical left/right design for perfect fit 
  • Improved Biomechanics


  • Plantar Fasciitis
  • Achilles Tendonitis
  • Heel/Arch Pain
Size Average Shoe Size (US)
Men Women
S 3 - 5.5 4 - 6.5
M 6 - 9.5 7 - 10.5
L 10 - 13 11 - Plus
XL 13.5 - Plus