The Crescent Basalt Stone is best used during hot stone massage on the client's leg area. It is popularly used to apply pressure to muscles, releasing tension throughout the massage treatment. Due to the shape, it can over substantial areas of the clients leg, calf, thigh area, whether the clients leg, calf, thigh area, whether the client is laying face up or face down. 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. 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. • The Crescent Basalt Stone perfectly fits the shape of leg, calf, thigh area, whether the client is laying face up or face down. • It is popularly used to apply pressure to muscles, releasing tension throughout the massage treatment. • 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: 5” x 2.5” x 1”, 2 Pieces per Box.