The Rift Lace features a dual density Ascent outsole with a wavy tread pattern inspired by the footprint of a gecko - the grippiest in nature!The upper part of the shell consists of two parts that can flex independently, giving the Rift Lace a super consistent forward flex with no pressure points.Our Transition Zone tech seamlessly connects the Rift Lace's sole to the Exo Spine, accelerating response and preventing damage to the back of the boot when entering or exiting the binding. Tech Details Last 8ยบ Forward Lean (1:1 Lasting) Closure Traditional Lace Outsole Ascent Liner Silver Level Heat Formable Liner Liner Closure Integrated Lacing System with Lace Lock Insole 3D-Molded Dual-Density