Windfulogo 4Pcs Professional Hot Massage Stones Set Natural Lava Heated Basalt Warmer Rock for Spa, Therapy (3.14 x 2.36 in)

4 Pieces Stones: every piece of the massage stone have same size: 3.14 x 2.36x 0.79 in(6x8x2cm), suIt for back, shoulder and arms. Natural Lava Basalt Stones: Each piece stone made of premium natural Lava basalt stones; this stone has great heat retention, give your body a warmer massage, perfect for Spa, Massage Therapy. Ergonomic Design: The smooth surface makes the stone joint to your skin closely, avoid the heat waste, natural lava basalt stone surface have will keep more heat energy, medium size can be use on feet, face, eyes. Application: These Massage Stones can effective massage and warmer you muscle, give your body a deep relax, improving your blood circulation. It is suitable for the people who are often to use computers and mobile phones. Replacement Guarantee: The Massage Stones have a perfect quality, long lifetime, Should you find a flaw in the workmanship or function of the massage stones, and we guarantee replacement within 1 year.