Harrison Spinks Byron Emperor Mattress
The Harrison Spinks Byron is a firm, dual-sided natural mattress built around 13,060 springs across seven layers, which means support that adjusts to your shape with very little partner disturbance.
- Winter & summer sides, flip seasonally
- Firm feel, contours shoulders & hips
- Glue-free, fully recyclable springs
£4,549
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Harrison Spinks Byron Mattress
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Mattress details
Mattress
Harrison Spinks Byron Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
29
Layers
4
Layer Details
Top surface
Generously layered with 100% natural cashmere, mohair, cotton, hemp, flax and British wool. This is the winter side, where insulating wool with silk absorbs moisture and helps regulate temperature, which means fewer clammy nights in colder months.
Fillings
Soft cashmere, sourced as a byproduct from the fashion industry, brings insulation and a supremely gentle surface feel. It sits alongside traceable British sheep's wool from the British Wool partnership.
Springs
13,060 responsive springs across seven layers of high-density micro and Cortec pocket springs, which means very precise, localised support. The Cortec system is glueless and 100% recyclable.
Reverse surface
A breathable cotton side designed for summer use. Flip the mattress with the seasons to get the right sleeping temperature year round.
Layer details from featherandblack.com product page, September 2026.
Key benefits
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