Petzl Zillon - a working cord for positioning an arborist on a tree. 
Easily adjustable with just one hand, even when loaded, thanks to the progressive action of the lock/unlock device.
Petzl Zillon can be fixed in two modes:
- Double - fastening for two side points of fastening of the harness (metal half-rings) for uniform distribution of the load;
- Single - attachment to the ventral point, at which the free end of the sling is held by hand.

Petzl Zillon Features:
- steel friction links ensure the accuracy and smoothness of the sling movement, and, accordingly, the movements and accuracy of positioning;
- the design allows convenient one-handed adjustment even under load due to the action of the locking/unlocking device;
- the roller is mounted on sealed ball bearings so that the slack can be easily quenched;
- flexible rope guarantees good fluidity, yellow color gives excellent visibility;
- steel friction elements limit wear;
- available in three lengths:  2.5, 4 and 5.5 m.

Specifications Petzl Zillon 4 m:
- Length, m:  4 (13 ft 1.5 in)
- Weight, g:  735 (1lb 9.9oz)
- Material (s):  stainless steel, aluminium, plastic, polyester 
- Certificate (s):  CE EN 358
- Reference:  https://www.petzl.com/INT/en/Professional/Lanyards-and-energy-absorbers/ZILLON

MANUFACTURER

Petzl

If you are involved in working at height, industrial mountaineering or are simply an avid caver or climber, you are no doubt already familiar with Petzl products.
Today, PETZL is the world leader in the production of products for climbers and cavers, with about 200 patents and ISO 9001 and UIAA quality certificates.
All Petzl products are made of modern high-quality materials, which creates the perfect balance of weight, reliability and user comfort.
Many well-known athletes, including skiers, climbers and professional cavers, choose Petzl equipment exclusively.
When you pick up any Petzl product, you will feel the highest quality, thoughtfulness and craftsmanship.
The company's distributors operate in more than fifty countries.