Our thermal shirts are the perfect choice for all little snow adventurers who like to stay warm, comfortable, and colorful even on frosty days. Each of our thermal shirts keeps you reliably warm and dry – whether you're sledging, playing in the snow or wearing a snowsuit on a big winter adventure. As the first layer against the skin, it ensures all-round comfort. The soft inner layer reliably stores body heat and wicks moisture away from the skin. This creates an ideal body climate, even when romping around outdoors. The practical stand-up collar with zipper additionally protects the neck from wind and cold and makes it easy to put on and take off. Thanks to their elastic construction, our thermal shirts offer optimal freedom of movement and are particularly comfortable to wear throughout the day. Our Funderwear thermal shirts are made from 100% recycled PET, of which almost 55% is made from old clothing fibers! Production is not only sustainable, but also responsible and is OEKOTEX® and GRS® certified. This makes them skin-friendly, free of harmful substances, and particularly environmentally conscious, for a good feeling for you and your child. Of course, the typical WeeDo look can also be found here. Bright colors, creative patterns, and lovingly designed designs make our Funderwear thermal shirts real favorites. Whether worn as a functional base layer under a snowsuit or on their own, they are versatile and look really cool. The designs match our Funwear perfectly: colors, patterns, and motifs are lovingly coordinated with our snowsuits, winter jackets, and snow pants—for a harmonious look full of imagination, function, and joy.