The Giant Fleece Plant Cosies are a simple yet effective way of protecting shrubs and container plants from frost down to -6C. Plant warming fleeces or cosies are a simple yet effective way of protecting more tender shrubs and plants from frost, proving up to 4C of temperature lift on the coldest nights and days, which often make the difference between the plant being damaged or not. Measuring 1.8 x 1.2 metres, they are big enough to cover larger shrubs and plants around the garden. Their breathable fabric allows water to move in and out from the plant, so it can continue to grow perfectly normally, so you can leave them on for several months over Winter with no ill effects. They also allow light through, so growth is not affected at all.