FEATURES of the Scarpa Phantom Tech BootAutomatic and semi-automatic crampon compatibleVibram Zero Gravity sole saves weight while increasing warmthCarbon fiber insole board provides lightweight supportPatent-pending waterproof zipper and integrated gaiter are "all-conditions ready"Advanced outsole provides traction shock absorption and insulation yet is still ultra-lightQuick-Lace system make for a simple single motion when pulling laces closed-------------