Hign-concerned Chemical:NoneApplication:FootItem Type:Massage & RelaxationMaterial:TPESize:Multi Size SML Name:YIYUEQIANLIOrigin:Mainland ChinaFoot Massager Roller Massage Ball Plantar Fasciitis Deep Tissue Back Leg Hand Tight Muscle Massage Foot massage roller: Ergonomic foot roller with spikes can make acupressure effect deep-tissue massage to comfort tired feet, or relief the arch pain relief from plantar fasciitis. Massage balls: The spiky massage ball and studded massage ball can give you different massage experiences, increase blood circulation and decrease inflammation by massaging the tissue, great tools for reflexology and mobility , allowing acupressure therapy massages for the fascia. Most effective combination for relieving pain from plantar fasciitis, heel spurs, and tired achy feet.