* Medium/firm kids mattress* Bonnel open coil springs* Breathable EcoComfort Fibres™* HypoallergenicSuperb refreshing comfort and support for your little sleeper!EcoComfort Fibres™ and a breathable border offer a refreshing night's sleep for your little one by promoting free airflow throughout the mattress, helping to regulate your child's body temperature. Supporting your child as they grow, our Bonnell open-coil springs offer medium-firm support from head to toe throughout the mattress's life. Encased in a sumptuous quilted sleep surface for unparalleled comfort. Perfect for growing bodies and designed to keep them cool - enhanced breathability promoting free flow of air to help regulate your little one’s body temperature throughout the night, keeping them cool for a fresher, comfortable night’s sleep. Create the cleanest, safest and freshest sleeping environment for your child with a hypoallergenic, foam and FR chemical treatment-free bed.