10mm Dynex Runner rock climbing an electrospun membrane that is

an electrospun membrane that is waterproof and windproof while still air-permeable and stretchy

Constructed with AscentShell™ technology

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10mm Dynex Runner rock climbing an electrospun membrane that isAn essential part of any alpine climber's rack, Black Diamond Dynex Runners are indispensable for building anchors, slinging natural features or extending placements to reduce rope drag. This highly abrasion resistant, lightweight material won't weigh you down and absorbs less water than nylon, making it perfect for big routes and snowy or icy terrain. Each size is also color coded for quick and easy identification on your harness.