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. For the best fit, it is important to use the size chart before ordering.
Performance Features
- 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
- Skin Thin ™ Technology to increase air flow and temperature regulation
- 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