I bought the size 5
I bought the size 5 for my average sized 5yo & I think it should last this winter & next. She loves it, has stayed warm & dry even on the coldest days (w wind chills well below 0 F). Can’t speak to the durability as we’ve only had it a few weeks, but the material seems much more durable than other snowsuits we’ve had so I’m hoping this will withstand the hard wear it’ll get. Very happy w my purchase!