Sleep is important to all living creatures, and this product aids in reducing distractions. It is made of quality fabric that is manufactured from 100 percent non-toxic, breathable materials. Whether you have one pet bird or more, you will be pleased with this quality woven fabric. This Cover in black is simple to use by just slipping the cover over the cage. Darkening the cage is a nice way to help your parrot, finch, canary, dove or other avian creature fall asleep and stay asleep. This prevue hendryx bird cage cover is color-fast, lightweight and machine washable for easy care and maintenance. Choose from assorted sizes to accommodate the size of your feathered friend's cage.