Home / Mattresses / Firmness Rating / 5. Extra Firm 5. Extra Firm Sort Sort by:Most popularWhat's newPrice low to highPrice high to lowName A to ZName Z to A Showing 8 of 8 Products 5. Extra Firm Showing products 1 to 8 of 8 Sort by:Most popularWhat's newPrice low to highPrice high to lowName A to ZName Z to A Airsprung Aria 1200 Orthopeadic Double Size Mattress £389.99 Airsprung Aria 1200 Orthopeadic King Size Mattress £459.99 Airsprung Aria 1200 Orthopeadic Single Size Mattress £289.99 Airsprung Aria 1200 Orthopeadic Super King Size Mattress £549.99 Airsprung Ultra Firm Double Size Mattress £259.99 Airsprung Ultra Firm King Size Mattress £289.99 Airsprung Ultra Firm Single Size Mattress £179.99 Airsprung Ultra Firm Super King Size Mattress £339.99