Side view of Unisex OS1st Plantar Fasciitis crew socks in black and grey – featuring compression technology to relieve heel pain, cushioned foot zones, and breathable fabric for all-day comfort.
Side View of OS1st FS4 Plantar Fasciitis Sock – featuring targeted compression for plantar fascia relief, cushioned heel and arch support, and moisture-wicking materials for foot health.
Side View of OS1st FS4 Plantar Fasciitis Sock – featuring targeted compression for plantar fascia relief, cushioned heel and arch support, and moisture-wicking materials for foot health.
OS1st sock brand features with icons and text on a white background
OS1st care instructions and shoe size chart on a white background

Unisex FS4 Plantar Fasciitis (Crew) - Black

$30.99 USD
By Os1st
Size
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Step beyond ordinary socks with the OS1st FS4 Plantar Fasciitis Crew Socks in Black—engineered for proactive pain relief and lasting comfort. These crew-length socks support the arch and heel, reduce inflammation, and keep you moving without discomfort. Perfect for athletic use, workdays, or everyday wear.

Key Features:

  • Patented Compression Zone Technology® – Applies medical-grade, graduated compression to lift and stabilize the plantar fascia and Achilles tendon, helping reduce strain and pain.
  • Soft, Breathable Fabric – Crafted from moisture-wicking micro-nylon and lycra to keep feet dry, cool, and blister-free.
  • Crew Length Coverage – Provides extended support through the ankle and lower calf, making it ideal for both active and all-day wear.
  • Seamless Toe & Light Cushioning – Prevents irritation and offers added comfort without bulk.
  • Y-Heel & Anatomical Design – Ensures a secure fit that stays in place whether you're running, standing, or walking.
  • Durable Construction – Maintains compression and shape wash after wash.
  • Helps with foot conditions such as plantar fasciitis, heel pain, arch pain, swelling, poor circulation, blister prevention, achilles support, and general foot fatigue

Perfect For:

  • Runners, walkers, healthcare professionals, and workers on their feet all day
  • Anyone managing plantar fasciitis, heel pain, arch discomfort, or swelling
  • Active lifestyles needing breathable, supportive crew socks with moisture-wicking performance