These new, patented ascenders are strong, work on ropes from 8mm to 13mm and come with a patented lever that, when suppressed, allows for safe and easy down climbing without removing the ascender from the rope. They are complete with a comfortable rubber grip that stays that way even in harsh, wet conditions. The rope cam is designed to hold even on dirty, muddy or icy ropes. Each ascender weighs only 215 grams and is CE and UIAA approved.