... both and sauna all in one. The far infrared ray is 5.6-15 UM which close ... radial that can be absorbed easily. The far infrared ray can penetrates 40mm deep into human skins, ... so the recipient could receive and infrared massage, making celll tissues resonant, accelerate blood cirvulation ... . Thus, health will be improved.Advantages of Far Infrared Sauna Room:1. Expel tonxins 2. Reduce stres ...