I've bought the Grödel for Zugspitze ascent and must say they are absolutely their money value. For light to medium heavy boulders the Grödel provide a good and secure grip. To overcome even at the Höllentalferner the Grödel have bewert with me. They are easy to install and individually adjustable (in width). However, one needs for a screwdriver, which one should not forget about the Grödel spot to tie under the shoe. To grasp the Grödel before, so before the ascent begins to adjust, you have trouble packing them in the supplied pouch.
