Never one to let a good opportunity pass, CMI has stepped up to bat with their version of a rope-pedaling foot ascender. Although a bit bulkier than the competitive brand, CMI ascenders come left- and right-footed and include a lock-closed mechanism. That means the rope stays in place remains captive unless it is released manually. It can also be held in an open position for easy loading of rope. Anodized aluminum body, Kevlar straps, lifetime cam guarantee. For ropes 9 to 16 mm (each weighs 320 g).