The WLZ model is 100% cotton twill with polyester fleece lining and polyester bottom with button closure. Long neck length for added cold protection. The detachable bottom neck unit features a zipper for easy removal. The cotton twill and binding are flame retardant until washed. The fleece and polyester are flame resistant. Buttons and zipper are all plastic–no metal parts. Navy color black bottom. 3/package. 36/case. Sold by the each.