The FS4+ Compression Bracing Socks is a new expansion of our Socks with Purpose™ program. Designed as an all-in-one performance running and recovery sock, our FS4+ socks provide relief for ankle swelling, varicose veins, plantar fasciitis, Achilles tendonitis, heel and arch pain and shin splints while also improving recovery. Our 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-odour 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.

Our FS4+ Compression Bracing Socks provide medical grade orthopaedic support combined with Compression Zone Technology to relieve pain and prevent injury. Get relief from past injuries, plantar fasciitis, swollen ankles and feet, shin splints, or poor circulation.

The OS1st FS4„¢+ Compression Bracing Socks are designed anatomically correct with a Y-gore heel pocket for perfect placement on your feet and legs. The five zones of compression boost venous flow, protect the plantar fascia, support the Achilles and improve circulation to create a product that is comfortable and easy to wear daily.

Targeted Conditions:

• Recovery
• Ankle swelling
• Varicose veins
• Plantar fasciitis
• Achilles tendonitis
• Heel/arch pain
• Shin splints

Performance Features:

• Moisture wicking, extra durable and soft microfibre nylon
• Extra cushioning without the bulk
• Anatomical left/right design for the perfect fit
• Medical Grade 20-30mmHg graduated compression

Fit & Care:

• Hand wash with mild soap and air dry. No bleach or fabric softener• SizeAverage Shoe Size Small US: M 3-3.5 W 4-6.5 UK: 2-4.5 EU: 34-37.5 Medium US: M 6-9.5 W 7-10.5 UK: 4.5-8.5 EU: 38.5-43 Large US: M 10-13 W 11-PLUS UK: 9-12 EU: 43-47 X-Large US: M 13.5-15--- UK: 12.5-14 EU: 48-49• Size Ankle Circumference Calf Circumference Small• 6.5-8.5 in | 17-22 cm 9.5-14.5 in | 24-37 cm Medium• 8.5-10.5 in | 21-27 cm 12-17 in | 30-43 cm Large• 9.5-12.5 in | 25-31 cm 14-19 in | 35-48 cm X-Large 12-14 in | 30-35 cm 4.5-20 in | 37-51 cm