It was late June, and I was still skiing. Credit a lifelong obsession with the two-planked activity, and a massive winter in California’s Lake Tahoe area. More than 720 inches of winter snow had fallen, making my odd summer ski session possible. But that wasn’t the only curiosity that day. On my feet: a pair of Salomon S/PRO SUPRA BOA® ski boots, a new type of ski boot design. I tested the boots while skiing at Palisades Tahoe Ski Resort toward the end of the area’s legendary season. I’ll get to my feedback on the SUPRA BOA boots in a moment. But first, a little backstory.