Marmot Ajax Boys' Down Puffer Jacket, Fill Power 600 Jacket: 100% polyester herringbone, 4.6 oz/yd; Synthetic fur ruff: 71% acrylic, 15% modacrylic, 14% polyester, 22.7 oz/yd Imported Boys' down puffer jacket is ideal for winter wear, whether he's creating a snow fort in his own backyard, tackling his first ski slope, or sledding down his favorite hill Moisture-resistant Down Defender treatment on 600 fill power down keeps you warm in wet conditions Zippered handwarmer pockets for added warmth; wind flap behind front zipper to block drafts Elastic-bound cuffs for a secure fit and heat retention Built-in Angel-Wing Movement design allows for full range of mobility