Dachstein's Gaisberg GTX is an excellent hiking & trekking boot with a newly designed sole. Their Flex sole has various features that will add to your outdoor walking experience. The moulded EVA sole eases rolling motion while you walk because the ball of the foot point is moved backwards to allow a smoother transition. Enhanced flex grooves in the rubber outsole allow for greater mobility & a moulded TPU heel cap keeps the foot in the optimum position for walking. 3 zone lacing means that you can configure the top of the boot to match the arch of your foot. The smart 3D knitted upper teamed with a GORE-TEX membrane makes them smart & waterproof 486g @ size 8.5