This foot massager roller is made from high quality PU and TPE material, nontoxic skin friendlyThe nubs recreate acupressure effect of deep-tissue massage to aid pain relief from plantar fasciitisErgonomically contoured roller for full contact with sole of the footThe foot roller offers muscle and deep tissue massage for arch pain, plantar fasciitis treatment, heel spurs reliever and tired feetLightweight and extremely portable, take your foot roller to work and on trips in a briefcase or carry-on bag