Sweet undershirt for small predators

I had here at Amazon several undergarments to choose ordered for my son, this he has picked out among others.
The translucent quality to be good as far as I can tell after 4 washes. The colors are not washed out, no pilling, the print still without breaks. However, I wash whatsoever with mild detergent.
Finally a nice print for little boys and not only constantly those ugly superheroes etc which otherwise gets to buy. The size I would call less than specified. My Son Wears normal 104 and that is often a bit large in the popular brands, but this vest fits snugly. With 110 it is then certainly no longer fit.