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 odour and moisture wicking ability
- Cushioned with nano bamboo charcoal ionised fibres 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
Comes with one (1) pair of socks per package.
Fit & Care:
• Fits true to size• To keep your footwear looking its best, wipe clean with a soft damp cloth and allow to air dry away from direct heat or sunlightFit and sizing guidance for this style is coming soon. If you are between sizes, we recommend sizing up.
Shipping. Free shipping over $149, or $7 standard. Shipping to Australia, most orders arrive within a few business days.
Returns. Easy returns with Checkout+ return protection added at checkout. 30-day returns on unworn items in original condition. Outlet items are final sale.
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