Leil® Black Cube Premium 4–6 Person Outdoor Sauna Kit
Leil® Black Cube Premium 4–6 Person Outdoor Sauna Kit
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The larger Black Cube: face-to-face seating for up to six with premium detailing and HUUM Wi-Fi heating.
- 4–6 person social, face-to-face bench layout
- Three-level alder benches and Deconord feature wall
- Floor-integrated HUUM Drop 9kW heater
- UKU Glass WiFi control and four dimmable LED strips
- 40mm Thermowood and 8mm black tempered privacy glass
Held in UK stock and available to order. Delivery to mainland England and Wales is included. Need help with access, electrics or installation? Ask a Heracles sauna specialist.
The Leil Black Cube Premium is a 4–6 person outdoor sauna kit that seats four in comfort or up to six at classic sauna closeness. Its £9,999 cabin value includes face-to-face three-level alder benches, a Deconord hexagonal feature wall and a central floor-integrated heater layout. The £12,884 package includes a HUUM Drop 9kW heater, UKU Glass WiFi control, four dimmable LED strips, treatment kit and black bucket and ladle, sold for £9,499.
Why the Premium earns its name
The Premium is built around a more social, more refined sauna experience. Its three-level tiered bench layout improves accessibility and seating flexibility, while the 1.3m opposing benches seat four in comfort or up to six at classic sauna closeness.
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Face-to-Face Seating
Opposing benches maximise internal space and encourage a relaxed, social atmosphere, seating four adults in comfort or up to six at classic sauna closeness.
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Deconord Hexagonal Back Wall
A stunning geometric decorative panel transforms the interior into a true design statement.
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Floor-Embedded Heater
The HUUM Drop 9kW is now centrally positioned between benches with a protective guard – maximising space and heat distribution.
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4 Strips of Dimmable LEDs
Double the lighting of the Classic with wireless dimmer control – set the perfect mood for relaxation.
HUUM Drop 9kW Heater
The HUUM Drop is renowned for producing soft, long-lasting steam thanks to its innovative design. The stones are in direct contact with the heating elements, creating an authentic löyly that traditional Finnish sauna enthusiasts appreciate.
In the Premium, the heater is floor-mounted centrally between the benches with a protective heater guard, optimising heat distribution throughout the cabin while keeping you safe.
UKU Glass WiFi Control
The sleek black glass UKU control panel complements the Premium's aesthetic perfectly. Pre-heat your sauna from anywhere using the HUUM smartphone app – perfect for having it ready when you arrive home.
The intuitive touchscreen lets you set your preferred temperature, timer, and lighting with ease. Compatible with 2.4GHz WiFi networks.
Crafted for Excellence
Every detail of the Black Cube Premium has been considered to deliver an authentic, luxurious sauna experience.
40mm Thermowood
Premium grade thermowood walls and roof provide exceptional insulation and durability. No additional insulation needed.
8mm Privacy Glass
Black tempered safety glass on the front and door – provides privacy while letting in natural light.
Alder Benches
Premium alder wood benches stay comfortable to touch even at high temperatures. Three-level design for different heat intensities – an upgrade from the Classic's two levels.
Dimmable LED Lighting
4 LED light strips with wireless dimmer control. Create the perfect ambience for relaxation.
Branded Accessories
Includes Heracles Wellness branded black bucket and wooden ladle set – premium quality sauna essentials.
Estonian Craftsmanship
Manufactured by Leil Saunas in Estonia – a country with deep sauna traditions and exceptional woodworking expertise.
£12,884 of sauna and equipment for £9,499
The Premium cabin is worth £9,999 before the HUUM heater, WiFi control, four LED strips and accessories are added. Buy the complete package for £9,499 and save £3,385.
Black Cube Premium Cabin
Face-to-face three-level alder benches, Deconord feature wall and central heater layout — worth £9,999
HUUM Drop 9kW Heater Package
Floor-integrated heater with guard and side panel — worth £1,299
UKU Glass WiFi Control
Pre-heat and control the sauna from your phone — worth £839
Deconord Feature Wall
Hexagonal decorative panels included in the Premium cabin value
Four Dimmable LED Strips
Double the Classic lighting package, with wireless dimmer — worth £498
Black Bucket & Ladle
Heracles branded sauna set — worth £249
Heater Guard
Protective safety rail included in the HUUM heater package
Treatment Kit
Paint and oil included for finishing the cabin
Full Specifications
Sauna Cabin
Heater & Electrics
From Our UK Warehouse to Your Garden
The Black Cube Premium is held in stock at our Essex warehouse for fast UK delivery. It arrives flat-packed on a pallet with comprehensive assembly instructions.
Delivery to mainland England and Wales is included
In stock and ready to ship from our Essex warehouse. 3-5 working days.
Pallet Delivery
Arrives on a pallet (~1.2m H × 1.2m D × 2.12m L) via tail lift truck.
Self-Assembly Kit
Detailed instructions included. DIY in a few days, or 1 day with our team.
Professional Installation Available
Our expert team of 3 carpenters can build your Premium in just one day. Prices start from £1,500 + VAT, depending on your location from London.
Bring home the £12,884 package for £9,499
Save £3,385 with the Premium cabin, HUUM Drop 9kW heater package, UKU Glass WiFi control, four dimmable LED strips and black bucket and ladle included.
Seating & bench layout
Compare the usable bench space, comfortable seating and lie-down capacity before choosing your sauna.
| Bench layout | Two opposing benches |
| Usable bench dimensions | 2 × 1,300 mm L × 600 mm D 2 × 4 ft 3 in L × 2 ft D |
| Seats comfortably | 4 |
| Maximum seated capacity | 4–6 |
| Lie-down capacity | Seated use only |
Lie-down capacity assumes a minimum usable bench length of 175 cm (5 ft 9 in). Taller users should compare the listed bench length with their height.
24/7 Customer Support
24/7 Customer Support
Our customer support team is always here to help. Contact us anytime via email or live chat for assistance before or after your purchase.
