Indoor Slippers Mizutori Geta DRILL DESIGN Two-Piece Series. These are room shoes made of natural Japanese cypress. Color: Black Upper (Surface): Synthetic leather Upper (Lining): Artificial leather Insole: Shizuoka-produced cypress + EVA Sole: EVA Size: M I wore them once and then put them away. Please refrain from purchasing if you are sensitive to items that have been stored at home.