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The FS4" Plantar Fasciitis Sock features OS1st's Compression Zone Technology® using four zones of light to firm compression to heel and arch pain. The zones stretch the plantar fascia, provide support, and add heel cushioning without the bulk.
The FS4™ Plantar Fasciitis Sock features OS1st’s Compression Zone Technology® using four zones of light to firm compression to heel and arch pain. The zones stretch the plantar fascia, provide support, and add heel cushioning without the bulk.
General Sizing
For Women's Footwear: B is the standard width, 2A is narrow, D is wide, and 2E is extra wide.
For Men's Footwear: D is the standard width, B is narrow, 2E is wide, and 4E is extra wide.
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