Ever wonder how your web-footed friends can sit around in an icy pond in the dead of winter without feeling the chill? It's because they're down insulated, just like the Patagonia Down Sweater for kids. Pull on this 600 fill power mini-puffy and your kid will feel an immediate source of heat (his own body) bubbling up from inside. Like all Patagonia products, the utmost care is taken in choosing both the fabrics (bluesign® certified where possible) and down (Traceable from farm to factory), so you and the ducks can breathe easier.