ROCKIN' FEET are Patent Pending glycerin filled insoles, providing cushion massage and arch support.They give pain relief for Plantar Fasciitis, Heel Spurs, Foot Leg and Back Pain, while the continuous massage increases blood flow and circulation. Washable, wear in any shoe, run jog walk or stand. We also carry Tens units small pocket size portable units that ease and massage sore and tired muscles while doing any activity. STOP by and test today and take advantage of our SHOW SPECIAL. (less)