4 XXL Oval Basalt Hot Stones – 15 cm | Master Massage

Extra-Large 15 cm Basalt Stones for Broad Hot Stone Massage & Placement

The 4 XXL Oval Basalt Hot Stones by Master Massage are oversized professional massage stones designed for situations where a particularly broad contact surface is useful. Measuring approximately 15.2 × 8.6 × 2.8 cm each, they are substantially larger than standard L and XL oval stones. Their flat oval profile makes them particularly useful for larger body areas, broad placement work and therapists who want to expand an existing hot stone collection with a true XXL stone size.

✔ 4 XXL natural basalt hot stones
✔ Approx. 15.2 × 8.6 × 2.8 cm each
✔ Extra-large contact surface for broad body areas and placements
✔ Flat oval shape – versatile for placement and controlled manual use
✔ 100% natural black basalt
✔ Ideal expansion or replacement pack for professional hot stone sets

Why Choose XXL Hot Stones?

The defining feature of the XXL stone is surface area. At approximately 15 cm long and 8.6 cm wide, each stone covers a substantially larger area than a conventional body-sized massage stone. This makes the XXL format particularly useful when broad contact is preferred over a small, highly focused working surface. The additional stone mass also means the XXL format behaves differently from thinner and smaller stones. It is therefore best viewed as a specialist size that complements a professional collection rather than as the only oval stone size a therapist needs.

Broad Contact for Larger Body Areas

Master Massage positions the XXL oval stone for larger treatment areas. Typical professional applications include suitable work around:

• Back
• Abdomen
• Hips
• Thighs
• Larger leg areas
• Other broad body zones

The large flat surface can be useful for both appropriate static placement and controlled manual stone massage, depending on the practitioner's normal treatment technique.

Flat Oval Shape with Rounded Edges

Despite their large size, the stones retain the classic flat oval profile used throughout many professional hot stone collections. The broad faces provide maximum contact area, while the rounded perimeter avoids sharp transitions around the edge of the stone. For therapists who already work with standard oval stones, the XXL format therefore feels familiar while offering significantly more surface area.

Natural Black Basalt for Professional Hot Stone Use

The stones are made from natural black basalt. Basalt is commonly used for hot stone massage because the dense volcanic material absorbs and retains warmth effectively. Master Massage states that the stones are shaped and polished using traditional finishing methods without wax, artificial dyes or added chemicals. Natural basalt varies slightly from stone to stone. Small differences in colour, grain, surface character and exact dimensions are therefore normal.

XXL, XL or L Basalt Stones?

The correct oval stone size depends primarily on whether you need versatility, broad contact or maximum surface area.

Choose Size L if:
✔ you want a versatile everyday working stone
✔ easy handheld massage is a priority
✔ you need a core size for several body areas

Choose Size XL if:
✔ you want noticeably more surface area than Size L
✔ broad body areas and larger placements are important
✔ you still want a stone that remains practical for handheld work

Choose Size XXL if:
✔ maximum contact area is the priority
✔ you regularly work with large body zones
✔ you want oversized placement stones
✔ you already have smaller general-purpose stones in your collection

Compare the 4 XL Oval Basalt Hot Stones – 11.4 cm or browse all Single Hot Stones & Specialist Massage Stones .

XXL Oval Stones or Crescent Stones?

Both are larger specialist stones, but their shapes serve different purposes.

• XXL Oval Stones: maximise flat surface area for broad contact and large placements.
• Crescent Stones: use a curved profile designed to follow contours such as calves and thighs.

Choose XXL when maximum broad contact is the priority. Choose Crescent when curved body contour is more important.

Ideal for Expanding an Existing Hot Stone Set

Many complete hot stone sets contain only one or two extra-large stones, while the majority of the collection consists of medium and large general-purpose sizes. This four-piece XXL pack allows you to increase the number of oversized stones without purchasing another full collection. It is particularly useful if your existing set already provides sufficient medium and small stones but you regularly find that you need more large-area placement or broad-contact stones.

Heating Larger Basalt Stones

Due to their larger dimensions and greater stone mass, XXL basalt stones may require more time to reach an even working temperature than smaller, thinner stones. Heat them only in a suitable temperature-controlled professional hot stone warmer and ensure that the heater provides sufficient usable internal space for stones of this size. Always check the actual temperature of every stone before client contact. Never assume that a larger stone has the same internal and surface temperature as smaller stones in the same warmer. Compare our Hot Stone Heaters .

Product Specifications

• Manufacturer: Master Massage
• Product type: Extra-large oval basalt hot stones
• Size category: XXL
• Quantity: 4 stones
• Material: 100% natural black basalt
• Shape: Flat oval
• Dimensions per stone: Approx. 15.2 × 8.6 × 2.8 cm
• Approximate imperial size: 6 × 3.4 × 1.1 in
• Surface: Shaped and polished
• Typical use: Broad body areas, larger placements and expansion of existing sets
• Hot stone use: Yes, with suitable temperature control

Care & Professional Use

• Heat the stones only in a suitable professional temperature-controlled hot stone warmer.
• Always check the actual temperature of each stone before client contact.
• Allow sufficient time for larger stones to warm evenly.
• Use controlled pressure appropriate to the body area and your professional massage technique.
• Clean and disinfect the stones according to appropriate professional hygiene procedures after every treatment.
• Allow the stones to dry completely before storage.
• Remove chipped, cracked or rough stones from treatment use.

Package Includes

• 4 × XXL flat oval natural basalt hot stones

Hot stone heater and additional massage stones are not included unless expressly stated otherwise.

Delivery

• Free standard delivery to Mainland UK.
• Prices are shown including VAT.
• For destinations outside Mainland UK, please see our Delivery Information .

Natural basalt varies in colour, grain, surface character and exact dimensions. Product specifications may be updated by the manufacturer.

Frequently Asked Questions

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