Carry your colors. The Twistie Tumbler Military Edition is a 22oz or 32oz insulated stainless steel tumbler featuring officially licensed branch designs — Army, Air Force, Americana, and OCP Camo. Built on our PURE Refresh frame: 18-8 stainless steel interior with a 201 stainless exterior, double-wall vacuum insulation, push-on slide lid, and a BPA-free flip straw. The everyday tumbler with service pride built in.