Zoot CompressRX Sock Sizes
Sock Size	Men's Calf Size (inches)	Women's Calf Size (inches)
2	N/A	9.5-12
5	18-20	N/A

Sock Geek Says:

Zoot compression socks are fit based on calf size not foot size.  Measure the diameter of the widest part of the calf muscle for best results.

Developed by CEP, a leader in compression sportswear research, Zoot CompressRx compression socks are designed to provide the optimum level of pressure flow for maximum benefit.  26mmHg (mmHg is the unit of measurement used in compression garments) at the ankle and decreasing to 18 mmHg just below the knee allows for faster venous return from the feet and ankles. The benefit?  Based on CEP and Zoot's research:  29% decrease in lactic acid build-up and 25% reduction of perceived effort.

Zoot CompressRX socks feature an achilles propreoception zone that's located at the rear of the sock to support the achilles and add comfort.  SynchroRX lightweight silver infused antimicrobial fabric effectively thermo regulates and manages moisture. Zoot's CompressRx Socks are also right/left foot specific with padded foot soles to prevent irritation and enhance comfort.

Zoot CompressRX Sock Specs

Sock Fibers:

90% - Nylon
10% - Polyurethane

Made in Germany