Petzl KNEE ASCENT LOOP Knee Ascender Assembly
The Petzl KNEE ASCENT LOOP is designed to make single-rope ascents smoother and more efficient when using a Petzl ZIGZAG or ZIGZAG PLUS with the CHICANE auxiliary brake.
The complete assembly includes an upper connection strap, integrated CROLL L rope clamp, lower Dyneema strap with foot loop and an XS TOOLBAG storage pouch. Used with a PANTIN foot ascender, sold separately, it creates an efficient rope-walking system that helps reduce effort during ascent.
Fully adjustable straps allow the system to suit a wide range of climbers, while replaceable components help extend its service life.
Key Features
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Facilitates efficient ascent on a single-rope system
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Designed for use with ZIGZAG or ZIGZAG PLUS and CHICANE
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Integrated CROLL L rope clamp captures progress during ascent
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Upper strap raises the mechanical Prusik and CHICANE assembly
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Lower Dyneema strap includes an adjustable foot loop
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Multiple adjustment points suit different climber heights and body shapes
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Connectors and adjustment buckles allow quick installation and removal
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Integrated thumb catch makes the CROLL L easy to install on the rope
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Supplied with an XS TOOLBAG pouch for compact storage
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Replaceable components support long-term use
Compatibility
Designed for use with:
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Petzl ZIGZAG
PANTIN foot ascender is not included.
Specifications
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Materials: Aluminium, steel, nylon and polyester
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Weight: 280 g
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Compatible rope diameter: 8–13 mm
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Rope compatibility: EN 1891 Type A low-stretch kernmantel ropes
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Included rope clamp: Petzl CROLL L
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Included storage pouch: Petzl TOOLBAG XS
Important Information
The KNEE ASCENT LOOP is an ascent-assistance system and is not a life-support attachment point.
Always read and follow the current Petzl technical notice before use. Users must be appropriately trained in arboricultural climbing, single-rope ascent techniques and equipment inspection.
Explore the Petzl Range
Complete your climbing system with professional Petzl ascenders, mechanical Prusiks, connectors and tree-care equipment.