The Jaure II MS LT High is a top quality boot without a waterproof membrane, designed for the truly demanding user. Compared to trekking boots from Central Europe, Lundhags has a unique construction: there is no waterproof membrane. The lower part of the boot is instead made of patented Certech rubber. The shaft is made of leather, which can be given a water-repellent treatment. - Opti S last: unlike most Lundhags shoes, this is *not* a wide model, and especially around the ankle, the Opti S is a smaller volume alternative - 27 cm high foam-filled shaft - Fast and easy lacing - Rubbermac Defender sole and midsole with extremely high torsional rigidity - A 6 mm layer of EVA absorbs shocks and insulates against cold from the ground - Excellent reinforcements at the toe and heel weight: 890g/boot (size 42)