* Firm kids mattress* Bonnel open coil springs* Breathable EcoComfort Fibres™* HypoallergenicA firm kids mattress with Bonnel open coil springs designed to support your child from head to toe, even as they grow. Breathable EcoComfort Fibres™ soothe and maintain a comfortable temperature so your child will wake more refreshed, while the smooth sleep surface adds an extra level of comfort. Silentnight's EcoComfort Fibres™ provide enhanced breathability, letting air flow freely to keep your little one cool throughout the night. Create the cleanest, safest and freshest sleeping environment for your child with a hypoallergenic, foam and FR chemical treatment-free bed.