Britax Römer Dualfix M Plus Style in Carbon BlackFlexible Safety for Growing Families When it comes to your childs safety and comfort on the road, you want a car seat that goes the extra mile. The DUALFIX M PLUS in Carbon Black is designed to make every journey easier, safer, and more flexible for families on the move. With its 360 rotation, extended rearward facing option, and multiple recline settings, this car seat is built to adapt to your childs needs as they grow from 3 months up to around 4