Most strollers offer a bassinet or lie-flat mode which allows you to use with your newborn, right from day one. These strollers can interchange on the chassis to accomodate a bassinet, carrycot or newborn cocoon to make your newborn more secure with a firm yet flat surface. Other stroller model, commonly travel strollers feature seat units only making them suitable for little ones who have some neck control or can sit unsupported, which usually happens around 6 months old.