Adapter for lower infant carrier or carrycot theres no need to buy a new pushchair as you welcome your second child or twins the b ready adapter allows you to securely attach any britax romer infant carrier or britax carrycot onto your pushchair with just a few simple clicks turning your single pushchair into a smooth in line ride for two this is also a great option for parents of twins as you can choose to attach two infant carriers two carrycots or one of each the set includes extensi