The Star mattress is made using an Open Coil Bonnell Spring unit with strength of Medium support. Beautifully made with Classic multiple layers of fillings with a lightly quilted Belgian Damask and finished with a modern upholstered design. This product is handmade in the UK, using the finest materials, conforming to the British standards. Star offers a classic bed made with quality damask material, which helps to create a comfortable bed at a comfortable price. Measurements (Select your choice of mattress size from the drop-down list above): Depth (Thickness): 18cm (7 inches) 2ft6 Small Single: Length: approx. 190cm Width: approx. 75cm 3ft Single: Length: 190cm Width: 90cm 4ft Small Double: Length: approx. 190cm Width: approx. 120cm 4.6ft Double: Length: approx. 190cm Width: approx. 135cm 5ft King Size: Length: approx. 200cm Width: approx. 150cm Note: Sizes are approximates and may vary slightly.