The order arrived quickly, suits are super, exceeded all expectations. I ordered my son 3,5 years old (height 105 cm) for the summer two options-red in the size of 5 T and green (leaves) In the amount of 6 T. the first one is right now, there is a chance that by the summer will be small, but my son does not grow very intensively, we carry many things for two years in a row. the second suit he is now great, I think, in the summer will be good. but frankly, I would not say that the difference between them is 1 size. more like two. in Russian I would say 5 T red-Russian 104. 6T Green-Russian 116-122.