The ultra-durable Infant NUPTSE One-Piece offers unparalleled water-resistant warmth. The 100% nylon ripstop shell has a durable water-repellent finish to ensure they stay dry on wet winter days in the snow. The 700-fill goose down is ultra-warm and lightweight and Responsible Down Standard certified, so no animals were harmed in the making of the jacket. The asymmetrical front zip keeps the zipper away from their chin, and the binding on the cuffs ensures the suit will stay on snug and keep the cold out. The fold-over mitts at the cuffs will keep their hands warm, and they won't have to worry about losing them.