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. (aka never going back). Like ad meliora means onto better things