A lightweight, abrasion-resistant clip-in for big wall efficiency. For direct aid only.. . ?. . . Bottom loop with sewn half twist for clean girth hitch. Tight weave for stiff feel. Very compact 12 mm wide design. Available in 2 lengths. For direct aid only. Weight?:??[115 cm] 33 g (1.16 oz). [140 cm] 43 g (1.52 oz).