The BEDZONLINE Hybrid Memory Foam & Spring Mattress in 4ft6 Double size offers a comfortable and supportive sleeping experience for adults. With a thickness of 20cm, this mattress features a combination of memory foam and Bonnell coil construction, providing a medium firmness level. The hypoallergenic design makes it suitable for those with allergies, and the white polyester fabric cover adds a touch of elegance to the bedroom. Easy to care for, this CertiPUR-US certified mattress should be rotated head-to-toe every 6 weeks to ensure even wear and longevity. The orthopaedic design and tight top style provide excellent support for a restful night's sleep.