OS1st TA4 Thin AirTM Performance Socks feature never before applied technology to keep your feet cool and protected during any activity. Created using 200n medical grade machinery and materials we are able to build in comfort, durability and blister protection, yet with the thinnest upper foot profile ever made. The "Thin SkinTM" construction with uniquely positioned lift-bars, maximizes air-flow achieving a cooling sensation to your feet.
Targeted Conditions:
- Blister protection
- Sore/achy feet
- Hyper-sensitivity
- Overheating
- Maximum air flow
- Skin ThinTM design
- Allows for natural toe splay
- Heat release
- Lift bars for max air flow
- Anti-bacterial
- Ultra light
- Wear alone or paired with OS1st TA6 Thin AirTM Calf Sleeves
- Compression sock care instructions
Before ordering, use this size chart for accurate fit.
| Size | Average Shoe Size | |||
| S | US: M 4.5-6.5 | US: W 5-7.5 | UK: 2.5-5 | EU: 35.5-28.5 |
| M | US: M 7-10 | US: W 8-11 | UK: 6-9 | EU: 39-43.5 |
| L | US: M 10.5-13 | US: W 11.5+ | UK: 9.5-12.5 | EU: 44-48 |
| XL | US: M 13.5+ | UK: 13+ | EU: 49+ | |
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