The ISOFIX base from Simple Parenting has been especially for the Doona. It is installed into your car using the ISOFIX anchor points to reassure you that the seat is secured correctly, without the need to additionally secure it in place with a seatbelt. Compatible with doona car seat. Only use in front seat if there is no active air bag. ISOFIX compatible . Compliant with eu regulations. Features an adjustable foot beam isofix and foot beam indicators. Extra support leg for extra stability. Manufacturers 2 year guarantee.