For Bare Feet Puffin on Rock Socks Blue Medium Made in USA White colored Socks are made of 75% True Fit Polyester & 25% Spandex Colored Socks are made of 75% Acrylic Yarn & 25% Spandex Adult Size Medium 9-11 (fits ladies shoe size 6-10 or men's 5-10). One size fits most. Designed for comfort and style & Made in the USA True Fit with Stretch Recovery after every wash.