The Kidtch Foam Mattress has a removable thermally bonded polypropylene cover on all sides. Washable at 60 degrees. Features * Hypo-allergenic, water resistant, breathable, removable cover, washable at 60°c * Inner core - High resilient, dent resistant foam, comfortable and safe * This mattress meets BS7177:2008 and BS1877 Part 10:1997 * This mattress is manufactured WITHOUT the use of Antimony, Phosphorus or Arsenic based fire retardant treatments.