Round out your ZigZag SRT climbing gear with the Petzl Knee Ascent System. Designed to work with the ZigZag when used on a single rope, the Knee Ascent System helps you climb more efficiently with the attached Croll rope clamp and adjustable lower strap. Choose either a foot loop bottom strap or a clip-style bottom strap.
Accepted Rope Diameters: 8mm to 13mm
- Includes XS Petzl Toolbag for gear storage!!
- Upper strap, attached Croll rope clamp, and adjustable lower strap
- Climb faster and easier