Easy Size Guide
Click here to view our easy sizing guide to make sure you are getting the right fit.
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 OS1stis 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:
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Made with ultra-soft nylon treated with silver-ion technology for anti-bacterial odour and moisture wicking ability
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Cushioned with Nano Bamboo Charcoal ionized fibres for durable softness
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Skin Thin, Technology to increase air flow and temperature regulation
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Seamless construction
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Left/right design for anatomical fit
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Y-Gore heel
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Hand wash and hang dry only
What makes us different?
FIT PROMISE
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