Technical Details Technology Hand-nested calico pocket spring construction Spring tensions available: Soft, Medium, Firm, Extra Firm Featuring 1,326 springs in the 150 x 200cm size (5ft x 6ft 6in) Upholstery Crafted exclusively from natural fillings: British fleece wool, hand-teased Devonshire fleece wool, British fleece needled wool Encased in high-quality ticking for durability and breathability Hand-tufted with felt washers to ensure long-lasting structure and support Borders Upholstered with protective wool Two rows of hand side-stitching for added durability Horizontal handles for ease of movement Air vents for improved breathability Overall mattress height: 21cm/8.3" + 6cm/2.4" doming (+/-2cm/0.8")