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Description
If heel and arch sensitivity make the first steps of the day rough, the FS4 Plantar Fasciitis Socks put the same six-zone compression idea behind OS1st's flagship sleeves directly into a regular sock you can wear all day.
Best Used For
- Daytime support for plantar fascia discomfort
- Long days standing, walking, or running on hard surfaces
- Wearing inside work boots, athletic shoes, or everyday footwear
- Adding gentle structure to your day without a separate sleeve
Key Features
- Targeted arch and heel compression inspired by the original FS6 sleeve
- Deep heel pocket and anatomical shaping that keeps the sock in place
- Moisture-wicking yarns engineered for extended daily wear
- Seamless construction to help limit rubbing on sensitive feet
- Available in No-Show, Quarter Crew, Crew, and Merino Wool lengths
Size And Fit
The FS4 Plantar Fasciitis Sock is sized S through XL and sold one pair per box. Sizing follows shoe size — match the chart below to your everyday footwear and pick the corresponding size.
- Sizes: S, M, L, XL
- Available in No-Show, Quarter Crew, Crew, and Merino Wool
- Colours include Black, White, Grey, Aqua, Coral, Lavender, Mint, Blue, Steel Blue
- One pair per box
- Standard: 89% Nylon, 11% LYCRA Spandex · Merino Wool: 40% Nylon, 25% Acrylic, 25% Merino Wool, 10% LYCRA Spandex
Care Instructions
- Machine wash cold on gentle cycle
- Tumble dry on low heat
- No bleach
- No fabric softener
Shipping And Returns
Shipped from Medibrace Canada with Canadian checkout and bilingual customer support. Compression and bracing products are fit-sensitive, so we recommend reviewing the size chart before ordering for the best feel.
Frequently Asked Questions
How does this compare to the FS6 sleeve? The FS6 is a footwear-only sleeve worn under socks. The FS4 builds the compression zones directly into a wearable sock — convenient when you want one layer instead of two.
Which length should I pick? No-Show disappears in running shoes, Quarter Crew sits above the ankle, Crew is a classic mid-calf height, and Merino Wool is the cool-weather pick.
Can I wear them inside work boots? Yes. The Crew or Merino Wool versions in particular work well as a daily work-boot sock with built-in arch support.
Are they sold as a pair? Yes, one pair per box.