A Breathable, Anti-allergenic Quilted Mattress, One side of the cover is Quilted and the other side is PLAIN to keep the baby WARM in Winter and COOL in Summer. Suitable for Newborns and Toddlers, Surrounded by a breathable yet Water repellent Zip up washable cover. The open Cell Foam structure allows good airflow and helps promote heath dissipation. Foam is free from antimony, phosphorus and arsenic based fire retardant treatments and is made with "Ozone" friendly formulation. Fully complies with the UK Health & Safety Standards.