This is a listing for three anthophyllite stone slabs for ganbanyoku (rock bathing) and sauna use. High-emission natural ceramic for far infrared rays. The far infrared effect warms the body even in low-temperature baths, allowing you to enjoy the effects of natural stone that have been passed down since ancient times. For ganbanyoku (rock bathing) ◯ Size: Approximately 38cm wide x 22cm long, 1cm thick Stored indoors for a while. Unused. There are some minor scratches, but the condition is good. Instruction manual is not included. Please purchase if you understand this.