XIIIG (aka “13G”) is a 10-level Modular Multisport System of functionally superior thermoregulation (00-09): Apparel, wetsuits & advanced innovations. For performance & lifestyle, XIIIG is premium, technical & inspired by military & athletic layering. XIIIG gets its namesake from the 13th Roman Legion from Gemina that crossed the Rubicon in 49 B.C. Like ad meliora means onto better things