Reversible Socks: A great companion for long periods of sitting or standing, a powerful tool for challenging human limits.

Flippos socks are not only a great companion for prolonged sitting or standing, but also a sharp tool for challenging human limits.
Sharing Hong Kong athlete Catherine Cheng's 100KM ultramarathon challenge with Flippos socks!
“Another big challenge completed...
Can't belive I can finish the race within 20hrs.”

Socks worn: Dream Time
Hong Kong Athlete — Catherine Cheng