The Signatory Superb introduces a refined two-layer spring architecture, uniting hand-opened long-stranded Austrian Moosburger® horsetail with hand-teased Real Shetland Wool blended with cashmere. This pairing shapes both the feel and thermal behavior of the sleep surface, delivering a balanced, responsive surface that responds to movement while maintaining a calm, breathable microclimate from the first touch.
The ticking combines wool, silk, and viscose for breathability and softness, while the upholstery layers move from resilient British fleece wool to long-staple horsetail that resists compression over time. A soft, temperature-moderating blend of Real Shetland Wool and organic cotton forms the core, supported by a high-density pocket spring system of 3,296 individually responding vanadium steel springs in King size. The border is reinforced with coir and wool and finished with four rows of hand side-stitching to extend the usable surface and preserve the upholstery profile over years of use. Each mattress is hand-tufted with woollen tufts and twine to compress the fillings into a stable, consistent depth at every tuft point.
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