The duo plus combines installation flexibility with a unique innovation from britax compatible with isofix or 3 point seat belt installation the seat caters to any car while its pioneering pivot link system ensures reduced frontal movement in the event of an accident features forward facing installation from 9kg to 18kg isofix system allows direct connection to the cars isofix anchorage points 5 point safety harness with one pull adjustment top tether provides a third anchorage point limit