Good sauna stones are essential for your sauna, and Coasts' sauna stones are some of the best! With Coasts' stones, your sauna can be kept perfectly hot and humid, letting you relax and get refreshed. Simply place your sauna stones over your heater so they store heat, pour water over the top of them, and voila! Instant steam and a comfortable, hot, wet sauna experience. Coasts' stones are the optimal shape and size to allow healthy air flow from your heater; good air flow means good heat flow! Package includes 40 pounds worth of stones, assorted sizes and shapes.