. The Clima Smart Foam Cotbed Mattress with its breathable foam core and unique dual layer Airwave system offers 2 different comfort levels. Finished in a soft touch Clima Smart Heat Regulating Cover that prevents your child from overheating that can be easily removed for cleaning. Suitable from Birth. 10cm deep offering a comfortable and supportive sleeping surface as recommended on the National Childbirth Trust website.Key Features Dual Layer Nursery Quality PU Foam Core with Airwave TechnologyClima Smart Heat Regulating Soft Touch Fabric CoverTwo Different Comfort Levels. .