WP4 Wellness Performance Socks by OS1st OS1st WP4 Wellness Performance Socks are the latest innovation in our Socks with Purpose Program. The WP4s are strategically designed for individuals who suffer from diabetes, sensitive feet and poor circulation. The WP4s feature light to moderate compression to improve circulation and Nano-Bamboo Charcoal that has been proven to help maintain healthy feet and skin. OS1st WP4 Wellness Performance No Show Socks Black Unisex