This hypo-allergenic & Durable pocket spring mattress adapts to the changing weight of your child during the different stages of their development. Made using clevafoam technology it is scientifically proven to reduce the pressure on the back of your baby's head by 50% and increase support by 80%, thereby helping to prevent plagiocephaly (flat head syndrome). the lightweight and breathable mattress is hypo-allergenic, Ph balanced and toxin free, making it ideal for babies with asthma and allergies. , , Only "baby-safe" Anti-fungal and anti-mite treatments are used in the making of this mattress. Our clevafoam pocket sprung mattress is conveniently vacuum packed so it is easy for you to pick up and carry home. This does not impact the integrity and benefits of the mattress. When you open the packaging, The mattress will return to his correct form, within a short period. We recommend you allow 48 hours for the full benefits to come into effect.