A category-defying hybrid boot designed in collaboration with the late Ueli Steck, the forward-thinking, updated Ribelle Tech HD combines elements of running and mountaineering footwear to create a truly innovative tool for   ultralight, high-output alpinism.
 
    Weight reference : 550g; 1lb 3.4oz (1/2 pair size 42)
    Lining : HDry® + Primaloft® Gold & Silver
    Midsole : Light PU
    Insole : Activ Plus
    Rand : Full
    Primary material : Leather & Synthetic
    Crampon compatibility : Semi-Automatic
    Waterproof and breathable : Yes