Features of the Adidas Acerra 3ST ADV BOA SnowBoard Boot Grippy, rugged multi-directional rubber Outsole for traction on Snow, ice and top sheets Boost Midsole and instep power lacing system for targeted support custom to each rider Flex 6 of 10 Dual H3 BOA lacing system Gold level, Dual-Density, heat-moldable Innovative, articulated cuff shell design with a 3D-molded tongue Inner ankle harness with speed lacing Removable power strap