This fabulous high quality boot is perfect for high treks & classic mountaineering. The lightweight construction & sensitive feel make it perfect for scrambling & crampon compatibility introduces winter capability. The Terrealte GTX is a brand new model from AKU & uses the new EXO-skeleton construction that provides superb stability & comfort with minimal weight. This gorgeous boot has been designed & produced in AKUs Italian factory & is perfect for work & play in the high mountains in all conditions. It is comfortable enough for long treks & technical adventures & has the strength & support to accept semi-automatic crampons for winter activities, a true all mountain boot. The key to the comfort & stability of AKU boots is their IMS system. Normally the midsole (the boots backbone) is made from a flat stiff board or plate, but IMS uses a 3D anatomically shaped carbon midsole that cradles the foot in a natural position reducing internal movement & encouraging a naturally relaxed foot. What this means is that your feet feel less tired as they are not constantly working to provide support, the IMS is doing all that. The modular sole unit of the Terrealte has been constructed using the new Exoskeleton construction which provides protection & stability without compromising the weight of the boot. The Exoskeleton is made up of a softer material to absorb impact shock & a more rigid material to provide stability, lateral retention & the perfect torsional rigidity. A Vibram Mulaz low profile outer sole has a dedicated climbing area for secure grip on rock with enough tread for trekking duties. Robust & high quality suede uppers combined with the superb Air 8000 technology provide support & very high levels of breathability. Air 8000 technology is used to laminate the Gore-Tex membrane with the uppers to provide breathability levels 11 times greater than traditionally constructed boots. Flex zones at the ankle provide freedom of movement for trekking without compromising support for more technical use & an integrated gaiter keeps snow & debris out of the boots. Lacing is controlled through steel roller eyelets that allow an even lace pull right form the toe to the ankle. Lace tension can be separated between ankle & lower foot with a locking cleat. A full rubber rand protects the uppers form abrasion & is thicker on the instep where most contact occurs. A brilliant & superbly comfortable B2 rated boot for all mountain adventures. Suede & Air 8000n uppers Vibram Mulaz sole unit IMS 3 comfort & support Gore-Tex lined Performance fit Exoskeleton support system