Harvia R-991 Sauna Heater Stones, Rounded Olivine, 5-10cm, 33lbs
Natural Olivine Diabase:
Durable stone from Finnish rock, selected for purity and safe sauna use.
Rounded Shape Design:
Smooth stones allow water flow deep into layers, boosting steam quality.
Soft Steam Ideal:
Water cascades gently to lower layers, creating a mellow, relaxing löyly.
Encourages Air Circulation:
Loose stacking increases airflow, improving heater efficiency and lifespan.
Pair with Angular Stones:
Best used atop angular stones to enhance bottom-layer heating and steam density.
Universal Compatibility:
Compatible with all electric and wood-burning sauna heaters.