Compact Fluorescent Lamps (CFLs) are energy-efficient light bulbs that use a small amount of mercury and phosphor coating to produce light. CFLs use significantly less energy than incandescent bulbs, making them a cost-effective option for general lighting needs. These bulbs come in various sizes and shapes to fit different fixtures. Shopping for compact fluorescent lamps online offers a variety of options, allowing you to choose the right CFLs for your home or office while saving on energy costs.