Big enough for the long shift. The 40oz Tumbler with Handle Military Edition is an oversized insulated stainless steel tumbler with a comfort-grip side handle and twist-on hard-straw lid, in officially licensed branch designs — Army, Air Force, Americana, and OCP Camo. Interior 18-8 SS, exterior 201 SS, double-wall vacuum insulation, BPA-free always. Splash-proof for the desk, the dashboard, and everywhere in between.