Ideal if you find your current mattress too firm or wish to convert 2 x single beds to a king size. The memory foam convertor with Blue Gel technology acts as a luxurious extra comfort layer. Combining 2 units into 1 Instantly rejuvenate any sleep surface Gel-infused memory foam helps provide added flexibility and support Promotes a cooler experience Enhanced comfort and support Easy-set-up boost your mattress comfort within minutes Anti-Allergic and anti-bacterial protection Protection from pests and dust mites 4 Elastic Straps to secure Sizes: 91cm | 107cm | 137cm | 152cm | 183cm