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Fifty Sense: Common Sense Ideas for Thriving after 50
Fifty Sense: Common Sense Ideas for Thriving after 50

Review: Injinji Tetratsok

Fifty Sense Seal of Approval The key design principal in the development of the Tetratsok by Injinji was to create the best possible interface that allowed the entire foot to perform naturally and freely inside our shoes, just like being barefoot.

Anatomical Interface System (AIS) is engineered to separate your toes with a thin, anti-friction membrane that is both lightweight and breathable. Seamless in construction, the tetratsok forms to every contour of your foot. This allows for true restriction free movement from your heel to five toes, encourages healthy circulation, and eliminates skin on skin contact between your toes to prevent blisters from developing.

Admittedly, it was a little weird at first to get used to the sock, but within five minutes of wear, it was quite comfortable. I have extremely bad circulation, and tested this sock not only actively, but also on a long plane ride. They significantly reduced the swelling and tension.


...Fiftysense Product Review Panel

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