Platinum 3500 Pocket Gel Memory Foam Mattress Double Best for back pain

  

Size Guide (UK Standard Sizes). Single: 90 cm x 190 cm (3' x 6'3"). Double: 135 cm x 190 cm (4'6" x 6'3"). King: 150 cm x 200 cm (5' x 6'6"). Super King: 180 cm x 200 cm (6' x 6'6)?