What is a 2 in 1 car seat and pram in 1 buggy (relevant resource site)?

A stroller 2 in 1 car seat-in-1 buggy is an infant travel system that transforms from a pram into an infant pushchair as your child develops. It has a light frame with wheels that are small and folds compactly. It also faces the child away from their parent, so that they can take 2 in 1 pushchairs all the sights and sounds around them.