Just four years ago, I wrote the headline “Four-Buckle Boots Are About to Become a Relic of the Past.” I’m happy to report that, mostly, I was wrong—boots with traditional buckles are still alive and well. But that doesn’t mean nothing changed: when BOA dials landed on ski boots during the 2023-’24 season, they indelibly altered the ski industry, changing the way manufacturers think about, build, market, and sell boots. I’ve been thinking about what to make of the BOA revolution.