Color: Gray [Design that washes from toe to heel] 3D structure thoroughly cleans every part of your foot! The 3D structure provides a double approach to "causative bacteria" and "keratin"! It thoroughly removes causative bacteria, which are the root cause of bacterial growth, and fine keratin from every corner of your feet. [Focus on the bacteria that cause unpleasant odors] Bacteria from sweat eat old keratin, producing odors. The design allows you to wash every part of your feet, removing even the fine keratin that cannot be washed away with your hands or a body towel. [Soft, bouncy material that can even catch an egg] The material is so bouncy that it won't break an egg if dropped on it. It uses a comfortable, soft material that you'll love. It also has a foot massage effect, making it effective for people with cold sensitivity. [Non-slip design with suction cups] The back has suction cups for a non-slip design. With suction cups and hook holes, it's easy to store in the bathroom.