Manufactured by Rainbow using High density CMHR 25 density hypo-allergenic foam 4" inch deep Fully breathable (ventilated) The micro fibre cover has great benefits including anti bacterial, anti fungal, anti dust mite and air permeable Water proof cover Easy care cover can be un zipped and machine washed at 40 One piece foam block gives good support for the spine Conforms to: BS1877 and BS717 Zipped cover 48" x 24" 121cm x 60cm For Hygiene Reasons We are unable to accept mattresses back for exchange or refund once the packaging has been opened. This does not affect your statuary rights.