$34.95
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AC4
| SIZE | US M. SIZE | US W. SIZE | UK SIZE | EU SIZE |
| S | 4-6 | 4-6.5 | 1-5 | 33-37 |
| M | 6.5-9.5 | 7-10 | 5-8.5 | 38-41 |
| L | 10-12.5 | 10.5+ | 9-11 | 42-44 |
| XL | 13-15 | 11-13 | 45-47 |
Helpful Tips
To care for your new socks, check our Care Guide below!
|
1. Hand wash with gentle detergent, NO bleach 2. Dry naturally away from direct heat |
Overview
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.