<!--ProdInc[170064621]/Mall:[rei_US]--> T-Drive technology helps regulate boot flex to increase consistency and efficiency through changing temperatures, enabling you to ski longer with less fatigue T-Drive also reduces shell deformation, resulting in a more consistent fit, thereby making the boots warmer T-Drive technology is instantly noticeable when you start the descent, achieving a feeling of steady control with less effort MV (medium volume) fit features anatomically shaped 100 mm lasts for optimum fit Anatomically shaped lasts create a more precise fit out of the box, while also shedding weight and improving overall efficiency Lightweight C.A.S. shells and anatomic C.A.S. liners fit great out of the box; plus, a professional bootfitter can punch, grind and mold crucial areas for a truly custom fit Dimples on the shells reduce surface tension and facilitate heating, making it easier to customize the shells Celliant in the liners contains 13 thermo-reactive minerals that take body heat produced during workouts and reflect it back as infrared energy for better warmth and comfort Demanding skiers will appreciate the Asymmetrical Power Transmission shells, which match a stiffer interior with a more flexible exterior for faster edge-to-edge transitions On the downhill, 4 micro-adjustable buckles and a stiff 120 flex means these boots won''t buckle under the pressure of a strong skierImported. Technical specs <table border=1 cellpadding=5 style=''border-collapse: collapse;''><!--[--><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Best Use</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' data-v-fc44804c=''''>D <a href=''https://www.rei.com/product/212935/tecnica-mach1-mv-120-ski-boots-mens-20232024'' target=_blank><img src=''https://www.antpop.co.kr/antMain/AntImgView?CustID=jellymom2&MallKind=US&MallID=rei&ProdInc=170064621&MallIDEncodeYes=0&SiteName=PostSelf'' width=''100px'' height=''20px'' border=0></a>