An 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. The 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. Dynex is highly abrasion-resistant, strong and lightweight Color-coded for easy size identification Product Details Weight : [30 cm] 11 g (.4 oz) [60 cm] 19 g (.7 oz)