OS1st Unisex TA4 Thin Air No Show Socks Tennis and we've remained true to

and we've remained true to that purpose-built legacy ever since

Convenient alternative closure for easy on/off and adjustability

light and flexible sole platform

We put a HOKA oversized midsole and Meta-Rocker geometry into a flip flop and improved the toe straps with a more anatomically friendly fit

Patent upper and leather lining *on select styles

OS1st Unisex TA4 Thin Air No Show Socks Tennis and we've remained true toOS1st 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