weight ~8lbs 3 oz @ 27.5 The new Adrenalin is the world's first high-performance alpine free-ride boot that can function as a ski mountaineering boot--powerful, tall, and stiff to arc the biggest freeride skis, yet light and free-moving for ski mountaineering. Swappable touring and alpine norm soles (both included) make it compatiible with all step-in bindings, AT and alpine. The shell employs a carefully designed and tested mix of Pebax, PU, and carbon fiber. - garmontusa.com When the garvity of the situation calls for peerless power and precision, Garmont provides the Adrenalin, an alpine ski boot morphed into an off-road machine. Garmont accomplished the feat with a much talked-about transformation of the boot's sole. Affixed with eleven deep-set screws, the skier can swap soles, between a treaded, rockered AT sole and a true alpine sole. Translation? Skiers can now use one boot, sans angst, in either an AT or full-on modern alpine binding. This feature also provides a great tool for coaches and patrollers who frequently wear out their soles. The Adrenalin also features an asymmetric forefoot area, where the shell's top surface slants slightly downward across the forefoot form big to little toes. Garmont whittled down all angles and sides of the forefoot to match the foot outline, eliminating excess plastic and providing a more anatomical fit. The Adrenalin caters to the resort freerider scrambling out-of-bounds for the steepest, most technical terrain. This boot emphasizes the "Alpine" part of AT with a hefty, though not quite obscene, build. It outranks all other AT boots for stiffness in both walking and skiing modes. Not too surprising, as Garmont designed every aspect of this boot from the liner to the shell materials for descents. In typical AT-fashion, a two-position switch governs your choice between touring and skiing modes. This switch offers walking and touring similar to other AT boots, but not quite with the same ease. Still, the Adrenalin offers up another option for the ever-growing, performance-oriented, backcountry tool-bag, and a swift move from the shelves to the slopes would not surprise me. - Couloir Magazine October 2004