OS1st Black AC4 Active Comfort Socks OS1-10054-BLACK

The AC4 Active Comfort Sock uses two of OS1st's signature technologies for the ultimate comfort experience. The AC4 is built with nano-bamboo charcoal cushion where it counts and OS1st's cooling Skin Thin Technology for temperature regulation. Made for everything from exercise to everyday, this sock features blister protection, contoured padding, and light to moderate compression for support and fit.

Made with ultra-soft nylon treated with silver-ion technology for anti-bacterial odor and moisture wicking ability

Cushioned with Nano Bamboo Charcoal ionized fibers for durable softness

Seamless construction

Left/right design for anatomical fit

Y-Gore heel

Hand wash and hang dry only

Do not wash with bleach or a product that contains bleach