OS1st Travel Sock Over the Calf TS5 Color:Natural It’s more comfortable and flexible

It’s more comfortable and flexible than previous insulated FiveFingers

Featuring the signature comfort you've come to know

Each sock is made using a Ragg yarn twisting technique that knits together one dyed yarn and one undyed yarn

The open-pored and thus very breathable surface makes for a comfortable foot climate

tackling a trail

OS1st Travel Sock Over the Calf TS5 Color:Natural It’s more comfortable and flexibleOS1st TS5 Travel Socks have medically correct graduated compression for the prevention of venous issues related to long term sitting, such as air travel and other forms of extended immobility. OS1st products are especially known for quality, comfort and ease of use. You will not believe you are using an FDA medical device. Targeted Conditions: Circulation Improvement DVT (Deep Vein Thrombosis) Leg Cramps & Fatigue Enhanced Oxygenation Achy Legs