Spenco Ground Control Medium Arch Size:Medium (Women's 9-10 | Men's 8-9) The five-toe construction eliminates skin-on-skin

The five-toe construction eliminates skin-on-skin friction to help prevent blisters

Mesh ventilation zones increase airflow for all-day dryness

and all-day wear

Grey spacer targets small and sore tendons such as the Achilles and Patellar and should be used to create room for the spine when rolling

Ultra-lightweight Merino wool dries quickly and regulates temperature

Spenco Ground Control Medium Arch Size:Medium (Women's 9-10 | Men's 8-9) The five-toe construction eliminates skin-on-skinThe Spenco Ground Control insole, available in three arch heights, reduces excess material around the heel to smooth out your foot strike. With updated learning on the mechanics of the foot, Ground Control seeks to work with the foot, not against it. The neutrally positioned center of pressure design centers the foot and reduces pronation forces. Features Perforated EVA body Nylon arch support Polymer forefoot pad for energy return Polymer heel pad