Porous by nature.
Visible pores and natural grey tones give the stones their understated character. A textured finish you can see up close.
Willowybe
Rounded Volcanic Sauna Stones — 35 lb / 16 kg
Rounded Volcanic Sauna Stones — 35 lb / 16 kg
Natural grey volcanic stones with a rounded, porous surface. A finishing layer over suitable base stones, only where your sauna heater permits. Approximately 35 lb (16 kg); rounded stones only.
- Approx. 35 lb / 16 kg
- Typical size 5–10 cm
- Rounded, porous finish
Regular price
$79.99 USD
Regular price
$99.99 USD
Sale price
$79.99 USD
Ships
Estimated delivery
Shipping
Preparation takes 2 business days for the listed US, Canadian, Japanese, UK and European destinations. Their transit times use calendar days, including weekends. Estimates exclude remote areas and may change due to holidays, customs or carrier delays. Australian shipping estimates are in business days. Available options are confirmed at checkout.
Quantity
Couldn't load pickup availability
Shipping & Returns
Shipping & Returns
Shipping Coverage
WillowyBe ships to eligible addresses in the destinations available at checkout. 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 where offered. Any applicable shipping charge will be displayed before payment at checkout.
Processing & Delivery Times
Orders shipping to the destinations below require 2 business days of preparation before dispatch. Orders placed on weekends or public holidays begin processing on the next business day.
| Destination | Estimated shipping time after dispatch |
|---|---|
| United Kingdom & Germany | 4–6 calendar days |
| Other European destinations we ship to | 6–8 calendar days |
| Canada, United States & Japan | 3–5 calendar days |
Shipping times exclude the 2-business-day preparation period. The estimates above do not apply to remote areas. Calendar days include weekends. For remote-area delivery or destinations not listed above, contact us before ordering to confirm the applicable timeframe.
Delivery estimates are not guarantees and may be affected by weather, peak-season volume, customs or security checks, or carrier delays. Available shipping destinations and options are confirmed at checkout.
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 rounded sauna stones
Rounded form.
Natural character.
Soft contours. Porous texture. Natural grey volcanic stones bring a considered finishing layer to your compatible sauna heater.
35 lb / 16 kgApproximate net weight per box
5–10 cmTypical stone size · Approx. 2–3.9 in
Top layerOnly where your heater permits
Rounded stones only. Heater, base stones and scene accessories are not included.
A closer look
Quiet detail.
Distinctly natural.
A rounded profile with an open, textured surface. Each stone brings its own shape and shade to the arrangement.
Rounded. Never identical.
Typical size is approximately 2–3.9 in (5–10 cm). Individual dimensions, contours and colour vary naturally.
The sauna ritual
Stone. Water.
A moment to unwind.
Let the stones heat fully as directed by your heater manual. Then add small amounts of clean fresh water, only when your heater permits, and settle into the warmth.
Follow your heater’s water instructions. Avoid flooding the stones and keep clear of hot steam.
Choose for your heater
Two settings.
One sauna ritual.
A finishing layer for compatible electric and wood-burning sauna heaters. Confirm the required stone type, size and loading method before ordering.
Indoor electric sauna.
Place over suitable base heater stones only where permitted. Maintain the required airflow and never force stones between heating elements.
Outdoor wood-fired sauna.
Follow the stove manual for the permitted stone arrangement, total capacity and clearances. The stove, basket and tent are not included.
Match your heater.
Check that your heater permits rounded porous volcanic stones in the typical 5–10 cm size range.
Finish the top layer.
Use over suitable denser base heater stones only as the manufacturer allows. Base stones are not included.
Leave room for airflow.
Count both base and top-layer stones toward the total permitted load. Leave the specified airflow gaps.
Product details
Know your stones.
Natural variations are part of the material. Use these details alongside your heater manual to choose the right arrangement.
- Net content
- Approx. 35 lb / 16 kg per box
- Material & finish
- Natural grey volcanic stone; rounded, porous surface
- Typical stone size
- Approx. 2–3.9 in / 5–10 cm; individual stones vary
- Intended placement
- Top layer over suitable denser base stones, where permitted
- Heater compatibility
- Electric and wood-burning sauna heaters that permit this stone type and size
- Included
- Rounded volcanic sauna stones only
Heater, base stones, basket, tent, ladle and other accessories are not included. Compatibility and loading depend on your heater.
Setup & care
Set up thoughtfully.
Care simply.
Prepare the stones before first use, arrange them with care and inspect regularly between sessions.
A considered top layer.
With the heater cold, position each stone securely over suitable base stones as your manual permits. Respect total capacity and leave the required gaps for air.
Rinse. Dry. Inspect.
Rinse away loose dust before first use and allow the stones to dry. Cool fully before handling, inspect regularly and replace cracked or crumbling stones.
Care & questions
The details, answered.
From choosing your top layer to loading, adding water and caring for natural stone.
What is included in the box?
Approximately 35 lb (16 kg) of rounded volcanic sauna stones. Heater, base stones, stone basket, tent, ladle and other accessories shown are not included.
Will these stones fit my sauna heater?
Check the permitted stone material, shape, dimensions and placement in your heater manual. Typical stone size is approximately 2–3.9 in (5–10 cm), with natural variation. Compatibility is specific to your heater.
Can I use these stones throughout the heater?
These stones are intended as a top layer over suitable denser base heater stones, only where your heater manufacturer permits. Do not assume they can replace the entire stone load. Follow your heater’s loading instructions.
Will one box be enough?
Each box contains approximately 35 lb (16 kg). The amount you need depends on the permitted top-layer arrangement and your heater’s total stone capacity. Account for any base stones already in place and do not exceed the load limit.
Will every stone look the same?
No. Rounded profiles, grey tones and porous textures vary naturally. Individual stones differ in size, shape and colour; the box is sold by approximate weight rather than a fixed piece count.
How should I prepare and arrange the stones?
Rinse off loose dust with clean water and allow the stones to dry. With the heater cold, arrange them over suitable base stones only as permitted by the manual. Leave the specified airflow gaps and do not force stones between heating elements.
How should I add water?
Only add water when your heater permits it. Heat the stones as directed, then add small amounts of clean fresh water according to the heater manual. Avoid flooding the stones and keep clear of hot steam.
Why do sauna stones crack?
Repeated heating and cooling gradually wears natural stones. Inspect regularly with the heater and stones fully cooled. Replace cracked, crumbling or significantly deteriorated stones according to your heater manual.
How often should I inspect the stones?
Follow the inspection schedule in your heater manual, with more frequent checks for frequent use. Remove loose debris and replace damaged stones while preserving the specified airflow and loading pattern.
How can I avoid burns during use?
Do not touch or lean over hot stones. Keep children away from the heater and avoid the path of rising steam. Let the heater and stones cool completely before handling, cleaning or rearranging.
Explore your options
Choose your finish.
This listing is for rounded, porous volcanic stones. Prefer a naturally irregular profile? Explore the rough-stone option and confirm suitability with your heater manual.
Rounded volcanic stones.
Current product · Soft contours and a porous surface. Intended as a top layer where permitted. Approximately 35 lb / 16 kg per box.
Rough volcanic stones.
A naturally irregular shape and textured surface for a different stone arrangement.
A natural finishing touch
Complete the arrangement.
Approximately 35 lb / 16 kg. A rounded top layer for your compatible heater.
Life Improvement
For all of your health needs, WillowyBe has you covered.
-
Free Shipping
Free standard shipping is available for eligible products and addresses in the United States, Canada, Japan, Australia, the United Kingdom and selected European countries. Options are confirmed at checkout.
-
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.