This is a toddler sized meh dai (mei tai). The body is a little wider than size 2 and the seat is darted which makes the fit a bit wider. The meh dai (mei tai) is also 4cm taller. The top and sides are straight in the example below but a headrest is available. The photos are of my daughter who was almost 3. This carrier is 46cm/18" high and 46cm/18"wide (if measured across the darts).