??? PAINFUL SANDALS: When you first start wearing these therapeutic massage slippers, you may feel a lot of pain. This is because the massage knobs stretch the tight plantar muscles. Please wear socks and wear for 3-5 minutes at a time, it will take 1-2 weeks to get used to it gradually. ??? TENSION RELIEF: Ongoing use of foot massagers can help improve circulation, relieve foot pain caused by plantar fasciitis, arthritis and neuropathy, as well as soreness and fatigue in the feet and lower legs. ??? PORTABLE FOOT MASSAGER: An easy way to relax and activate your feet at any time, especially after working long hours, wearing high heels or hiking. ??? HEALTH BENEFITS: Each pair of reflexology slippers has 78 built-in massage points for foot acupuncture stimulation massage to help improve circulation, physical activity and overall health. ??? SIZE: The adjustable strap on the acupressure slippers, make them fit most foot shape. If you are between sizes, take the larger one.