The Cullinan

Strength, Elegance, and Unrivalled Comfort
Inspired by the largest diamond ever discovered, the Cullinan represents a union of tradition and innovation. A bed designed to deliver profound, restorative sleep night after night.

“The Cullinan shows just how far we can push traditional craftsmanship. It has a strength and depth to it that people don’t realise is even possible until they lie down.” — Brent Cooper, Founder

A Mattress of Uncompromising Depth

The Foundation of Excellence
At the heart of the Cullinan lies a 3,000-spring system, each coil meticulously pocketed to move in harmony with the sleeper’s body. This depth of engineering delivers a perfectly balanced surface that adapts to every contour, ensuring weight is evenly distributed and pressure points dissolve into comfort.
This system is enhanced by a unique combination of round and flat springs for superb edge-to-edge stability, ensuring that the mattress retains its elegant profile and continues to perform year after year. Surrounding the spring core are carefully layered natural fillings: hand-teased horsetail for resilience and breathability, cotton for softness, and wool blended with cashmere for indulgent comfort and superior temperature regulation. Together they create an enveloping, weightless sensation that allows the body to surrender to deep rest.
Two rows of meticulous hand side-stitching provide durability and precision finish, while internally supported handles make rotation effortless.

A Foundation of Strength and Finesse

The Cullinan divan is built upon a robust handmade timber frame, its tenoned corner joints and slotted cross members ensuring exceptional strength and longevity. Within, two rows of springs — one Bonnell and one pocketed — combine to deliver an unparalleled depth of support. This dual-layer system creates a responsive platform that actively enhances the performance of the mattress above.

Generous upholstery layers of horsetail and pure lambswool are then hand-finished, adding resilience, breathability, and a sumptuous touch of comfort to the foundation. The divan can be upholstered in natural fabrics of your choice and paired with legs in a variety of refined finishes, allowing the Cullinan to reflect your personal aesthetic while maintaining timeless elegance.

The Cullinan Experience

The Cullinan is more than a bed — it is an advanced sleep system, designed to restore, refresh, and elevate every night’s rest. To appreciate its depth of comfort, you are invited to experience it in our London showrooms, where our expert consultants will help you explore the perfect configuration for your sleep.

This bed is available to experience exclusively at our London showrooms, where one of our sleep experts will guide you through a private consultation.

Book your sleep consultation

Key Features & Benefits

  • 3,000 individually pocketed springs: Perfectly adaptive support in every position.
  • Available in four firmness options: Tailored to your unique sleep preference.
  • Unique round-and-flat spring frame: Lasting shape retention and edge support.
  • Natural fillings: Cotton, wool blended with cashmere, and hand-teased horsetail — breathable, moisture-regulating luxury.
  • Two rows of hand side-stitching: Enduring craftsmanship and strength.
  • Tufted finish with internally supported handles: Durability and ease of care.
  • Robust handmade timber frame with tenoned joints: Strength that endures for decades.
  • Dual-layer spring system (Bonnell + pocket springs): Deep, therapeutic support.
  • Upholstered with horsetail and pure lambswool: Natural cushioning and resilience.
  • Choice of fine natural fabrics and elegant leg designs: Bespoke to your home.
  • Centre core of hand-teased horsetail: Light yet supportive.
  • Layers of wool blended with cashmere: Indulgent softness with natural breathability.
  • Finished with wool tufts: Refinement in every detail.