Small ovular toe stones are used in hot massage to relax and relive tension of the muscular stains in the feet. Each fit comfortably between each toe, providing heat and release to each toe. We use natural Black Basalt rock as the only material, all stones were shaped and polished by traditional handcraft, no wax, dyestuff, chemicals were applied during the production. Basalt rock is originally found deep within a volcano where it remains for hundreds of millions of years, gaining all of its natural properties. All Basalt is rich with iron and magnesium, which make this stone very effective in massage treatments. Basalt is excellent for holding heat for long periods of time and has very low radiation which makes this rock a much more healthy and beneficial stone for use. 8 piece per Pack.• To be used in hot massage to relax and relive tension of the muscular stains in the feet.• Each fit comfortably between each toe, providing heat and release to each toe.• 100% Natural Black Basalt; Excellent for holding heat for long periods of time; Rich with iron and magnesium.• Shaped and polished by traditional handcraft, no wax, dyestuff, chemicals were applied. •Size: 1.5" x 1" x 0.3", 8 Pieces per pack.