Petta is now available in new colors: cherry pink, blue heather, and grass green, a thin, flat-shaped five-fingered product woven with a two-layer structure of 100% silk on the inside that touches the skin and 100% cotton on the outside. did. By exposing the stretch threads (lining threads that stretch and contract unique to socks) to the outside, the silk is designed to touch the entire surface of the skin. The inside of the five fingers is usually made of pile knitting, but this one has a flat shape to make it thinner. Please see the product page for details.