The Patagonia Boys' Hi Loft Down Sweater Hooded Jacket has a lifetime guarantee, and your son is going to test that guarantee. He is a human rocket on skis, a monster on a snowboard, a sledding speed demon, and that's all before 10:00 a. m. Made from DWR treated mini ripstop nylon, this jacket sheds light snow and deflects wind. Lightweight 600 fill goose down insulation keeps your little man warm and keeps this jacket super light. The sweater part of this jacket's title indicates that this works as a perfect midlayer under a waterproof shell for cold and stormy days on the mountain, and the jacket part means he can zip this up as a top layer for sunny days in the backyard. Two zippered hand warmer pockets will hold a baggie with snacks or his mittens. An internal pocket doubles as a stuff sack so you can pack the jacket for travel.