Made of high-quality polyurethane foam, this mattress features an additional memory foam layer that responds to baby's body heat and provides a more restful and comfortable sleep. The MyBub Memory Foam Cot Mattress is treated with Ultra-fresh, an anti-microbial compound that effectively controls the growth of dust mites, mould, mildew, and fungi. This ensures that the mattress remains clean and healthy, reducing the risk of respiratory issues and other health concerns. It is approved by the Sensitive Choice program of the National Asthma Council Australia. MyBub and Clark Rubber are also proud to support Red Nose Australia, with every mattress sold contributing to the Red Nose Safer Sleep Program.