Mercury King Sauna Cube – Premium 8-Person Outdoor Wellness Sanctuary
The Mercury King Sauna Cube is the pinnacle of shared outdoor wellness — a grand, architectural sanctuary where tradition meets modern luxury, and every session becomes an experience worth gathering for.
Handcrafted from beautifully oil-treated Nordic spruce and framed in a bold, contemporary cube silhouette, this sauna is as much a statement piece as it is a performance retreat. Its striking exterior is engineered to endure every season, while a distinctive concave roof paired with an innovative ventilation system allows the timber to naturally expand and contract — forming a tight, durable seal that maximises heat retention and ensures long-term structural integrity.
Inside, double-row ergonomic seating creates a generous, social atmosphere that comfortably welcomes up to eight people — making it the perfect centrepiece for families, groups of friends, or anyone who believes the best wellness experiences are shared ones. A high-performance 9kW Harvia heater delivers rapid, enveloping warmth up to 90°C (194°F), while integrated Smart Wi-Fi controls give you effortless command over temperature and timing from anywhere via the dedicated app.
Ambient LED accent lighting sets the mood for every session, and the thoughtful, energy-efficient design ensures that luxury and responsibility go hand in hand.
This is not just a sauna. This is a gathering place. A ritual, reimagined at scale.
Built for the bold. Designed for connection. Crafted to last a lifetime.
Key Features:
- Expansive double-row seating comfortably accommodates up to 8 people
- Powerful 9kW Harvia heater delivering fast, even heat up to 90°C (194°F)
- Handcrafted from premium oil-treated Nordic spruce with a modern cube silhouette
- Concave roof with innovative ventilation for superior heat retention and durability
- Smart Wi-Fi connectivity – control temperature and timing remotely via app
- Integrated LED accent lighting for a warm, ambient atmosphere
- Energy-efficient design built to withstand the elements year-round






