PureLux OrthoFirm Mattress FIRM FEELAvailable in: Single: 3 x 63 (90cm x 190cm) Small double: 4 x 63 (122cm x 190cm) Double: 46 x 63 (135cm x 190cm) King: 5 x 66 (150cm x 200cm) Super King: 6' x 6'6 (180 x 200cm) Part of the Pure Lux range. If you're after a very firm night's sleep, this is for you. Introducing a new mattress to our already extensive range. The Pure Lux ortho memory foam mattress is one of the easier and lower cost methods to achieve a superb nights sleep. At 9" thick