Texture you can see.
A naturally textured surface and varied mineral pattern give the stones their distinctive appearance.
Willowybe
Natural Rough Sauna Stones — 35 lb / 16 kg
Natural Rough Sauna Stones — 35 lb / 16 kg
Natural rough volcanic stones for compatible electric and wood-burning sauna heaters. Approximately 35 lb (16 kg) per box. Stones only; confirm your heater’s stone size, type and capacity before ordering.
- Approx. 35 lb / 16 kg
- Natural volcanic stone
- Rough, individual shapes
Regular price
$69.95 USD
Regular price
$89.99 USD
Sale price
$69.95 USD
Free standard shipping to the United States, Canada, and Australia.
Ships
Estimated delivery
Shipping
Dates are estimates in business days and may change by destination or carrier.
Quantity
Couldn't load pickup availability
Shipping & Returns
Shipping & Returns
Shipping Coverage
WillowyBe currently ships to eligible addresses in the United States, Canada, Australia, the United Kingdom, Germany, and Sweden. We cannot deliver to PO boxes, military or restricted addresses, naval ports, or locations that our carriers cannot safely serve.
Shipping cost: Free standard shipping is available for eligible products and addresses in the countries listed above. Any applicable shipping charge will be displayed before payment at checkout.
Processing & Delivery Times
Orders placed Monday through Friday are usually processed within 2 business days after payment is confirmed. Orders placed on weekends or public holidays begin processing on the next business day.
- Standard U.S. delivery: typically 4–7 business days after dispatch.
- Express delivery: when available, typically 3–5 business days after dispatch.
- International delivery: timing varies by destination, product size, customs clearance, and carrier availability.
Delivery estimates are not guarantees and may be affected by weather, peak-season volume, remote-area service, security checks, or carrier delays.
Outdoor Sauna Sets & Oversized Orders
Outdoor sauna sets contain large and heavy components and may arrive in more than one package. Packages can be delivered separately. Please provide a valid phone number at checkout so the carrier can contact you if an appointment or delivery instruction is required.
Tracking & Delivery
After your order ships, we will email the tracking information to the address used at checkout. You can also track your shipment on our order tracking page.
Please inspect the packages when they arrive. If an item is missing or visibly damaged, photograph the packaging and product and contact WillowyBe Support as soon as possible.
If a delivery attempt fails because nobody is available or the address is incomplete, the carrier may charge a redelivery fee.
Taxes, Duties & Import Fees
For international orders, the recipient is responsible for any import taxes, customs duties, tariffs, brokerage charges, or other fees required by the destination country unless checkout explicitly states otherwise.
Questions Before Ordering?
For delivery availability or a time-sensitive order, contact us at Service@willowybe.com before purchasing. Our team is available to help confirm product and destination details.
WillowyBe natural sauna stones
Natural stone.
Essential heat.
Bring natural texture to your sauna ritual. Rough volcanic stones absorb heat from your heater and release it through the session, ready for steam when your heater permits water.
35 lb / 16 kgApproximate net weight per box
Natural volcanic stoneRough texture. Individual character.
For compatible heatersConfirm stone type, size and capacity
Sauna stones only. Heater, basket and accessories shown are not included.
Natural character
Different by nature.
Grey tones, visible mineral patterns and irregular profiles. Every stone is individual, and every box has its own mix of shapes.
No two exactly alike.
Shape, size, shade and piece count vary. Check the stone dimensions required by your heater before use.
The sauna ritual
Where heat meets water.
Heated stones help turn water into steam. Let them heat as directed, then add small amounts of clean water only when permitted by your heater manufacturer.
Follow your heater’s water instructions. Avoid flooding the stones and keep clear of hot steam.
Choose for your heater
Your ritual.
Indoors and out.
For compatible sauna heaters designed to hold natural stones. Your heater manual determines the correct stone type, dimensions, quantity and placement.
Indoor electric sauna.
Load according to the heater instructions, leaving the required airflow around the stones. Do not force stones tightly between heating elements.
Outdoor wood-fired sauna.
Arrange in a compatible stove’s stone basket, following its loading and capacity requirements. The stove, basket and tent are not included.
Check the stone requirements.
Match the stone material and dimensions to those specified by your heater manufacturer.
Plan the quantity.
Each box contains approximately 16 kg. Compare this with your heater’s required stone load.
Leave room to circulate.
Place stones securely without packing them tightly or blocking the heater’s ventilation paths.
Product details
Know what arrives.
Natural sauna stones, ready to rinse and arrange in a compatible heater. No fixed piece count or uniform stone size.
- Net content
- Approx. 35 lb / 16 kg per box
- Material
- Natural volcanic stone
- Profile
- Rough, naturally irregular
- Appearance
- Grey tones; natural variation
- Intended use
- Compatible electric and wood-burning sauna heaters
- Included
- Sauna stones only
Heater, basket, sauna tent, ladle and other scene accessories are sold separately. Confirm your heater requirements before ordering.
Simple care
Session after session.
A little preparation and regular inspection help you keep the stone arrangement ready for your next sauna.
Before the first session.
Rinse away loose stone dust. Load the stones as your heater manual directs, with spaces for air to circulate.
Ready for the next.
Let the heater and stones cool fully before handling. Inspect periodically, replace damaged stones and dry thoroughly before extended storage.
Care & questions
The details, answered.
From choosing the right quantity to adding water and caring for natural stone.
What is included in the box?
Approximately 35 lb (16 kg) of natural volcanic sauna stones. The heater, stone basket, ladle, tent and other accessories shown in the images are not included.
Will these stones fit my sauna heater?
Check the stone type, required dimensions, total capacity and loading method in your heater manual before ordering. These stones are for compatible electric and wood-burning sauna heaters designed to hold natural stones. Compatibility depends on your heater.
Are the stones all the same size?
No. These are natural rough stones, so size, shape, shade, texture and piece count vary. The box is sold by approximate weight, not by a fixed number of stones.
Will one box fill my heater?
One box contains approximately 35 lb (16 kg). Compare that amount with the stone capacity specified by your heater manufacturer. Do not exceed its loading limit.
How should I prepare and arrange the stones?
Rinse away loose surface dust before first use. Follow your heater manual and place stones individually in a stable arrangement with room for air to circulate. Do not force stones between heating elements or obstruct vents.
How should I add water?
Only add water if your heater permits it. Let the stones heat as directed, then add small amounts according to your heater manual. Avoid flooding the stones and keep people clear of the hot steam.
What water should I use?
Use clean fresh water that meets your heater’s water-quality requirements. Do not use seawater, chlorinated pool or spa water, or dirty water containing organic debris. Follow your heater manual.
Why do sauna stones crack or crumble?
Repeated heating and cooling can gradually weaken natural stones. Let the heater and stones cool fully before inspection, and replace cracked, crumbling or significantly deteriorated stones as directed by your heater manual.
How often should I check the stones?
Inspect periodically at the interval specified by your heater manufacturer, and more often with frequent use. Remove loose debris and replace damaged stones. Allow stones to dry thoroughly before extended storage.
How can I avoid burns?
Hot stones, heater surfaces and steam can cause burns. Do not touch or lean over hot stones. Keep children away from the heater and allow everything to cool completely before cleaning or handling.
Explore your options
A finish for your sauna.
This listing is for rough, naturally irregular stones. Looking for a rounded profile? Explore the alternative below and confirm suitability with your heater manual.
Rough volcanic stones.
Current product · A textured surface and naturally varied shapes. Approximately 35 lb / 16 kg per box.
Rounded volcanic stones.
An alternative rounded profile for a different visual finish.
Make time for the warmth
Start with natural stone.
Approximately 35 lb / 16 kg. For your compatible sauna heater.
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1-Year Warranty
If there's something wrong with your product, we'll replace it for up to 1 year, starting from the date of original purchase.