Light, packable, portable, wearable, the Marmot Tullus Down Jacket is feathers for kids. Sporting a 600 fill power down with down defender, the feathers don't clump, even if the jacket gets damp, a huge improvement over traditional down which turns limp and clumpy, and none too warm when it gets wet. Cut in an athletic cut to fit closer to the body this jacket will layer up under a rain shell for extra protection on an autumn adventure, tuck into a backpack in case it's chilly wherever he's going, and be that go to extra layer when it's bitter cold out there and he insists he has to be up on the mountain or perish from ennui. And really, isn't that just the point? To outfit kids in clothes that keep them comfortable so they stay engaged in winter sports, are as excited to be out there as we are, and are just as excited at two in the afternoon as they were when they started at ten? There aren't a whole lot of sports you can do with your kid that are as much a workout for you as it is for them, but on skis or a board just keeping up is an effort, they fly out before you like they've been gifted with wings. And perhaps they have been... the Tullus Down Jacket is filled with down, after all.