Little Beginnings Baby Boys Three-Piece Jacket and Pant Set 100% cotton onesie and pants. Polyester jacket Long-sleeved onesie with truck and car pattern. Coordinated red pants in soft cotton. Elastic waist and cuffs. Fleece hooded jacket with truck applique, contrast cuffs and buttons. As with all children's clothes, we recommend washing before first wear. Machine wash cold, tumble dry low.