OS1st FS4+ Over The Calf Compression Brace

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The FS4™+ Compression Bracing Socks is a part of the OS1st Socks with Purpose® program. Designed as an all-in-one performance running and recovery sock, our FS4™+ socks provide rel ief for ankle swelling, varicose veins, Plantar Fasciitis, Achilles tendonitis, heel and arch pain and shin splints while also improving recovery. OS1st's proprietary design infused with award winning, patented FS6® technology makes these socks a must-have to help strengthen your foot and leg structure and act as an overall health and performance aid. With precise targeted and medical grade graduated compression levels, the FS4™+ features Compression Zone Technology® that is designed for proper foot and leg support and injury prevention. Developed with the highest quality, soft moisture-wicking fabric containing an anti-odor treatment and padding in the right places, the FS4™+ creates a technical performance sock that strengthens the foot and leg structure and prevents overuse injuries. Show more