Concept Premium 4000 Memory Mattress Concept Premium 4000 Memory Mattress Please Choose Memory Foam Mattress Size Small Single Premium 4000 - 2'6" x 6'3" (75cm x 190cm) - £359.00    Single Premuim 4000 - 3' x 6'3" (90cm x 190cm) - £359.00    Small Double Premium 4000 - 4' x 6'3" (120cm x 190cm) - £479.00    Double Premium 4000 - 4'6" x 6'3" (135cm x 190cm) - £479.00    King Size Premium 4000 - 5' x 6'6" (150cm x 200cm) - £529.00    Super King Premium 4000 - 6' x 6'6" (183cm x 200cm) - £619.00    Quantity: