The Grower Pest Protection Cover is made from Micromesh for protection from insects, including aphids, carrot fly, cabbage root fly & other airborne pests. It fits over the Grower Frame & has four large side zips for easy access. The ultra-fine mesh allows air & water to pass through, whilst protecting plants from scorching & other weather damage. Ideal for protecting taller plants like brassicas & fruit bushes, it can be easily moved around or used in-situ on beds & borders.