In order to legally compete in any event sanctioned by the International Ski Federation, there are 47 pages worth of rules regarding equipment that athletes must comply with. Within these pages, collectively of the Specifications for Competition Equipment and Commercial Markings, certain equipment is forbidden (like collapsing poles) and a ski’s minimum weight is limited (to 750 grams per pair for cross-country). Four whole pages of that document are dedicated to the fabric and construction...