Surface thread: inner: 100% Silk / outer: 100% Merino wool
Composition : Wool 51%, Silk 39%, Polyester/Polyurethane 10% (inside fibre)
Made in Japan
One size

Thanks to the special structure of inner silk and outer merino, it keeps feet breathing, weil retaining natural body heat. Wearable throughout year.

The contacted part on skin is 100% silk. Outer part is 100% merino. Very little functionally-necessary synthetic fibre is used by 10%.