A child's spine comes under a lot of pressure every day, whether they're sitting in class or running around with their friends. That's why it's important for the spine to recover and rehydrate at night. The Quality Sprung Mattress comes with a zoned Miracoil support system that helps to align the spine in a healthy way, providing support in the most important areas, such as the hips and shoulders. It's also extra breathable for a more refreshing, hygienic sleeping experience that's super-comfortable and will help your child enjoy their day from the first school bell to bed-time. With Exclusive Miracoil support systems scientifically provide to improve posture & support the body, foam and FR chemical treatment free, for the cleanest, safest and freshest sleeping environment, an Eco Comfort fibre layer, which is made from 100% recyclable plastic bottles. Plus, extra breathable for a more refreshing, hygienic sleeping experience and firm comfort feel. 21cm depth.