A super king size mattress is the largest standard size available in the UK, measuring 180 x 200 cm (6’ x 6’6"). It offers plenty of space for couples who like to stretch out, or for families who like to snuggle up. A super king size mattress is ideal for larger bedrooms and can accommodate different sleeping positions and preferences. British Bed Store stocks a range of super king size mattresses in various materials and firmness levels, from memory foam to pocket sprung. You can also choose from different colours and fabrics to suit your style and decor.