It's a plastic strap that wraps around the shoe and reforms to its original shape when it cools down - kind of like a retainer brace. Stops the shoes from flattening out too much over time. In my opinion it works pretty well.
News La Planta de Shiva 9b by Anak Verhoeven - Twice!
Belgian climber Anak Verhoeven has climbed her first 9b - twice - with ascents of La Planta de Shiva at Villanueva del Rosario, Spain, becoming the fourth woman to climb the grade. A few days after her successful redpoint, Verhoeven...
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