Awesome little snow suit. Bought these in a size 2t for my then 2 years old and now 2 years later it still fits. Shes 4 1/2 now and this past winter most likely will be the last time shell be able to wear it. These suits are somewhat on the slim side. I cant layer a whole lot under it, and my daughter is only 30 pounds. We live in the freezing northeast and saw a lot of snow this year.  She definitely stayed super toasty and warm. Ill feel confident buying another size bigger if shes needs for next winter. For us, the grow factor in this snow suit was worth it and its worked well for us. The grow part is in the legs not in the chest and sides but that worked for us since my child is pretty skinny. Its a great soft suit, definitely a lot better than the big box store ones.