Your son is the self appointed king of winter, and warmth is paramount to his staying power through a long snowball fight or a frigid night checking out the winter carnival. It's therefore fitting you bought him the Marmot Boys' Guides Down Hooded Jacket to keep him warm all winter long. A combination of 700 fill down and durable polyester ripstop will withstand snowball shrapnel as he leads his friends and siblings on a full frontal assault in the neighborhood winter games. Down is the gold standard for insulation, trapping warm air in a grid like structure, but it has one substantive failing when wet, it loses loft and thus, the ability to insulate. The folks at Marmot want to keep your kiddo warm in down, so they created Down Defender. This proprietary technology imbues down fibers with water resistance so they don't immediately clump up when exposed to moisture. Just to make sure your boy stays warm, Marmot also gave the jacket's shell a DWR treatment so it sheds the snowflakes that he doesn't manage to catch on his tongue. Angel Wing Movement gives him full of motion without causing the jacket to lift, so he can climb with you and not show off his snazzy, superhero baselayers. The insulated hood keeps his melon warm on his first night out at altitude or when snipe hunting with his sister on New Year's Eve. A flap behind the front zipper protects him against cold gusts of air, and zippered hand pockets are lined for extra warmth when his hands are extra cold.