Anti-Slug Collars 20 Pieces Ø 24 cm for Vegetable and Plant Protection Product Description: A set of 20 transparent anti-slug collars is a reliable and eco-friendly solution for any gardener who wants to effectively protect their plants from pests. Made of high-quality PET plastic, the rings are resistant to all weather conditions – rain, wind, frost – and are designed to be reusable for many seasons.