19-20 model Professional snowboarder Atsushi Ishikawa's comfortable use of Evo buckle.Are you using it properly?

Atsushi Ishikawa explains the Evo buckle of the 19-20 model.Please also refer to the usage of Atsushi Ishikawa.Did you know that there are lock and unlock functions! ??Atsushi Ishikawa, who makes it tight, loosens and tightens it every time.Let's use it comfortably.