5.11 Tactical #48103 Signature Duty Jacket nylon 100% Nylon shell-Blood Borne Pathogen Resistant, high performance waterproof breathable seam sealed construction; zip-out liner for adjustable warmth Back Up Belt Sysytem chest pockets Back pull out panel; underarm zipper entry for embroidery access Bi-swing back ;zip thru collar Side zips with adjustable snaps