The Silentnight Mia 1000 pocket ortho mattress contains 1000 individually responsive pocket springs which help to spread body weight evenly providing perfect support. Polyester fillings provide a firmer orthopaedic feel for better back support. The mattress has a luxury soft knitted cover for a beautifully soft sleeping surface and is hypoallergenic. Easy-care mattress - no need to turn, simply rotate regularly. Medium/firm mattress feel. Mattress depth: 24 cm. Length: single and double 190 cm; king and superking 200 cm. Width: single 90 cm; double 135 cm; king 150 cm; superking 180 cm. If you have selected our bed disposal service we will contact you to agree your preferred delivery date and will collect your old bed at the same time as delivering your new one. Your old bed will need to be securely packaged before collection packaging materials will be provided in advance of delivery.