The Crystal mattress is 25cm deep and features 1000 pocket springs, which are designed to support our bodies and posture. Pocket springs adapt to individual weights and sleeping positions, meaning we get the support where we need it. The spring system is designed to avoid roll off, providing edge to edge support. The Crystal is a turnable mattress, finished in a soft damask fabric, and filled with rich natural layers of cashmere, silk, cotton and wool. This mattress is unbeatable value given the luxury fillings and finish. The mattress has been hand tufted for added durabilty and has handles and air vents to allow air circulation throughout. Features and Benefits Luxurious Fillings- This mattress is filled with rich natural layers of cashmere, silk, cotton and wool to offer you a luxurious mattress at an amazing value price. 1000 Pocket Springs- 1000 individually pocketed springs move with your body as you sleep to provide maximum support as you sleep. Air Vents- Air vents allow air to move through your mattress and enables it to have a more regulated temperature that is better and healthier for you to sleep on. Specifications Colour: White Material: Cashmere, silk, cotton and wool filling 1000 pocket springs Medium comfort Air vents Turnable mattress Tested to BS7177 / Made in the UK Length of guarantee: 1 year Mattress Sizes Small Single H25 x W75 x D190 Single H25 x W90 x D190 Small Double H25 x W120 x D190 Double H25 x W135 x D190 King H25 x W150 x D200 Super King H25 x W180 x D200