So what do we put on our children when the temperatures drop? Both of my kids hate bulky and too thick layers and that's why I bought some under clothing in the excellent material merino wool from Pierre Robert. It's thin, super warm, don't scratch on the skin and is breathable. Wool provides natural warmth and comfort and keeps small bodes warm even if the garment gets wet.
Now both Alexis and Leon has a full set each and I already tried them and they do work. Perfect for kindergarden and when playing outside.