Combining 2 units into 1 Instantly rejuvenate any sleep surface Quilted Cover Polyurethane 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