Thickened MaterialThe three-layer cover material has better thermal insulation effect, and the outer layer is made of non-woven fabric, with sponge in the middle and aluminum film inside. This palm tree root protector against frost is made of three-layer composite that against winter frosting and tree frost damage, ensuring the growth of your palm tree throughout the winter. Tree Trunk Protectors for WinterThe winter palm root anti-freeze plant bag is suitable for tree trunks up to 35cm in diameter, height 30cm, its maximum diameter is 39.37inch(100cm), and provides sufficient coverage for a wide variety of plants. Each palm tree cover is equipped with 4 ground nails, for a total of 8 ground nails, to ensure that it is completely fixed and protected from the elements. Thermostatic Temperature ControlFeaturing a thermostatic function, our tree root cover maintains optimal temperature levels, protecting the roots from frost and drought, winter tree root protector promoting growth throughout the winter season. Convenient to Use and ReusableSimply cover it on the roots of the palm tree, close it and pull the drawstring. It is also convenient to store and can be washed with clean water, then air dried for next use. Perfect Winter Plant CoverThe palm tree covers made of breathable and lightweight fabric allow plants to absorb air and moisture to maintain healthy growth. Meanwhile, it protects plants from bad weather such as frost, heavy rain and snow, as well as birds, insects, poultry and other animals. Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.