What Our Gearhead(R) Experts Are Saying: "The Ruler Boa is one of my favorites for all-mountain riding. The flex is balanced-supportive without being too stiff-and the dual BOA makes it easy to get the fit dialed. It's warm, comfortable, and ready for long days on the hill." Ready for any line on the mountain, the Burton Ruler Boa Snowboard Boot blends comfort, control, and versatility in a proven design that keeps progressing riders stoked all season. The medium flex hits the sweet spot between support and playfulness, giving you responsive edge hold without feeling overly stiff. The Dual Zone BOA(R) Coiler(TM) system with Lockdown technology tightens the upper and lower zones separately, so you can fine-tune fit on the fly. Inside, the heat-moldable Imprint(TM) 2 liner with 3M(TM) Thinsulate(TM) insulation locks in warmth and comfort while the Lock-Up Cuff secures your heel for confident control. The EST(R) Optimized Midsole and B3 Gel cushioning work together to lower your center of gravity, boost board feel, and smooth out harsh impacts. Whether you're carving groomers or dipping into side hits, the Ruler Boa makes it easy to ride longer and stronger.