Material: Wool Material: Microfiber Material: Acrylic Fiber (Woolen) Sleep SackInside: Polar Fleece Suit Baby Age:0-18 Months Features:Newborn Infant Baby Sleeping Bag Knit Crochet Winter Stroller Swaddle Sleeping Sack All around coverage sleeping sack, wrap whole body and also foot as a footmuff as well Thick and warm d