The Gro Pro? Essential Round Fabric Pots with handles are constructed from high-quality non-woven fabric. This fabric provides great support, while allowing air to travel into the root system. Gro Pro? Essential Round Fabric Pots feature breathable fabric allowing for faster plant growth through better access to oxygen. Air flow prunes the root structure for a healthier and happier plant. Gro Pro? Essential Round Fabric Pots will not trap water, which can help prevent overwatering of plants. Also keeps your roots cool in the heat. These fabric pots are made from 220 gram weight material.