With its GORE-TEX waterproofing, the Burton Outbeam GORE-TEX One-Piece Snowsuit keeps our kids' snowproof from head to toe. That 2-layer waterproof shell is reinforced in the butt and knees for added durability and sits on top of synthetic insulation that helps seal in their body heat, so they can spend more time outside sledding, throwing snowballs, and maybe even hitting the bunny hill. Plus, the Room-To-Grow system lets us extend the length to buy them an extra season of wear.