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Knee Ascent Loop


Introducing the Knee Ascent Loop, a versatile and lightweight knee ascender designed for tree care professionals. This adaptable system facilitates efficient ascents on single ropes using the ZIGZAG or ZIGZAG PLUS mechanical Prusik. The Knee Ascent Loop features an upper strap, CROLL L rope clamp, lower strap with foot loop, and an XS size TOOLBAG tool pouch. It’s adjustable for all shapes and sizes, ensuring a comfortable fit. Experience the superior performance of the Petzl Knee Ascent Loop for all your tree care needs.

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SKU: PET4/D022DA00 Categories: , , ,


Introducing the Knee Ascent Loop: A Comprehensive and Detailed Description

The Knee Ascent Loop is an innovative and highly adaptable knee ascender assembly designed to provide tree care professionals with a comfortable and efficient means of ascending single ropes. This state-of-the-art system has been meticulously engineered to facilitate seamless rope ascents, especially when using the ZIGZAG or ZIGZAG PLUS mechanical Prusik.

As a detailed description of the Knee Ascent Loop reveals, this ascender system is comprised of an upper strap, a CROLL L rope clamp, a lower strap with a foot loop, and an XS size TOOLBAG tool pouch. Each component is crafted from high-quality materials, such as aluminum, steel, nylon, and polyester, ensuring optimal durability and performance. With a weight of just 280 grams, the Knee Ascent Loop is not only robust but also lightweight and portable.

The Knee Ascent Loop’s upper strap connects to the mechanical Prusik, allowing users to effortlessly raise the ZIGZAG or ZIGZAG PLUS and CHICANE unit. Integrated into the system is the CROLL L rope clamp, which enables a comfortable ascent when used in conjunction with a PANTIN foot-mounted rope clamp (not included). The lower Dyneema strap is equipped with a foot loop, ensuring optimal foot positioning during ascents.

One of the standout features of the Knee Ascent Loop is its ease of installation and removal. The ascender system is equipped with connectors and adjustment buckles that simplify the process of putting it in place. The included XS size TOOLBAG tool pouch keeps the system organized and ready to use at a moment’s notice. Moreover, the CROLL L rope clamp’s integrated thumb catch makes installation a breeze.

Designed to accommodate users of all shapes and sizes, the Knee Ascent Loop offers multiple settings for optimal customization. This adaptability ensures a secure and comfortable fit for every arborist. Additionally, the system’s components are available as spare parts, further enhancing its durability and longevity.

With a minimum rope diameter of 8 mm and a maximum of 13 mm, the Knee Ascent Loop is compatible with EN 1891 type A low stretch kernmantel ropes. The product is backed by Petzl’s three-year guarantee and is available under the reference number D022DA00.

In summary, the Knee Ascent Loop is an exceptional ascender system that delivers unparalleled performance and adaptability for tree care professionals. Its lightweight design, ease of use, and compatibility with Petzl’s ZIGZAG and ZIGZAG PLUS mechanical Prusik systems make it a must-have addition to any arborist’s toolkit. With the Knee Ascent Loop, ascending single ropes has never been easier or more efficient.


  • Material(s): aluminum, steel, nylon, polyester
  • Weight: 280 g
  • Min. rope diameter: 8 mm
  • Max. rope diameter: 13 mm
  • Rope compatibility: EN 1891 type A low stretch kernmantel ropes

Additional information

Weight 0.5 kg




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