In a King size, 1,716 individually pocketed springs respond to movement without transferring it, each formed from Vanadium steel for resilience that resists fatigue over years of use. The spring layer offers four tensions — Soft, Medium, Firm, and Extra Firm — with the option to split firmness across the width to accommodate sleepers with different preferences. Above the springs, two distinct upholstery layers blend bonded British fleece wool and cotton to cushion contact, while a second wool and cotton lamination moderates temperature by drawing moisture away from the body.
Both fillings breathe naturally and compact slowly to maintain the mattress profile over time. The border features hand side-stitching in two rows to bind the spring perimeter to the upholstery and prevent edge collapse, ensuring a full sleeping surface to the boundary. Hand tufting with felt washers secures fillings in uniform compression, while air vents in the border provide passive ventilation through a depth of 8.3 inches plus 2.4 inches of natural doming for added comfort and longevity.
- 1,716 individually pocketed vanadium steel springs for durable support
- Four selectable tensions with optional split firmness by width
- Two-layer natural wool and cotton upholstery for pressure relief and temperature regulation
- Hand side-stitching and hand tufting to prevent edge collapse and fiber migration
- Passive border ventilation for ongoing breathability
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