Homecraft Sauna Rocks for Classic Heaters are carefully selected from premier local quarries in Whistler, British Columbia, ensuring they meet high standards for quality, size, and durability. These stones, sized between 3-4 inches, are specifically chosen for their density and porosity to provide optimal heat absorption and consistent heat transfer. By retaining and emitting heat effectively, these stones enhance the traditional sauna experience, making each session warm, relaxing, and enjoyable. Their durability ensures they withstand the intense heat of consistent sauna use without breaking down, making them an ideal choice for long-term performance.