The BioWit-Tube is a tree protection device developed only for the "Biowit" brand. The idea was "to create a product with a design by which the user sees immediately that this tree protection is made from 100% compostable bio-plastic." The product features a new locking-system, which enables the user to build a tube out of a flat film.

The transparent bio-film lets through enough light to ensure healthy growth, while protecting the plant against browsing and fraying. The microclimate inside the Tube promotes growth, while the flat design saves freight and storage costs. The patented lock ensures that the tube holds its shape for its entire useful life and a patented ground claw offers a secure grip.

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