The Dark Gray Foot Massaging Slippers Or Reflexology Sandals Are Mens Slippers, Womens Slippers, Reflexology Shoes, Acupressure Slippers And Shower Slippers (Size 7~8.5) Rubber Each massaging slipper has 3 sections of nubs, upper, middle and lower. The upper section has 5 sub sections corresponding to the five toes. The middle section has two sections, each section of which adopts different thickness of nubs due to the sloppy nature of the middle of the feet. Each section and sub section is tuned differently to achieve the maximum comfortness. The reflexology sandals are excellent shower slippers, which are water proof. The massaging slippers ( reflexology sandals ) have high resolution nubs that are very durable and comfortable. They are both mens slippers and womens slippers. High quality rubber reflexology shoes that are foot massaging slippers or acupressure slippers. Well designed and made massaging slippers, acupressure slippers and shower slippers.