Scarpa Phantom 6000 Mountaineering Boot 100% Textile Imported Rubber sole Shaft measures approximately 12" from arch Automatic and semi-automatic crampon compatible Vibram Zero Gravity sole saves weight while increasing warmth Primaloft Micropile and EVA inner boot makes this our warmest 6000 meter boot yet Patent-pending waterproof zipper and integrated gaiter are "all-conditions" ready. Quick-Lace system make for a simple single motion when pulling laces closed