This uniquely designed foam mattress is ideal for newborn babies44 in particular those who sleep in the feet to foot position it is ventilated entirely from top to bottom which allows an even circulation of air all over44 whatever position the baby is laid in the cot there is a non toxic pvc sleeve which is adjustable and can be positioned anywhere over the mattress pad44 or even removed if desired over this there is a tricot mesh cover which is easily removed for washing