These ultra-comfortable slippers are designed to be worn with or without socks for year-round use. Made from Sasawashi fabric – an anti-pill blend of breathable washi paper and antibacterial, odor-absorbing kumazasa plant fibers – these slippers keep feet smelling and feeling fresh and your floors clean. Designed for indoor use. Soft soles will wear over time if worn on rough surfaces. Made in Japan. Sizing Footbed length: 11.25" L Women 10.5-13 / Men 9.5-11.5 Materials Sasawashi fabric with a polyester sole Please let me know if you have any questions!