Now the SAKA Self Advancing Knee Ascender is even more storable. Weighs just 8.5 ounces but provides the performance of the SAKA so many have come to love. Adjustable stride with adjustable bungee that can pull right off the top of the ascender to fit every climbers need. A floating knee ascender makes clmbing stationary rope dramatcially more eficient. Get the performance of the orginal SAKA in a package that is super compact and easy to stow on the harness when not in use.