See which Coway Bidetmega bidet toilet seat is compatible with your toilet here. Only the Coway Bidetmega bidet provides our highest level of personal health and cleanliness. We are now offering a 90-day trial so you can be sure our bidet is right for you. The easy to install bidet toilet seat is designed to fit both round and elongated toilet bowls, depending on your need.   The Coway Bidetmega bidet features advanced i-wave cleaning technology for a multi-stage wash that adjusts pressure, temperature and motion for optimal hygiene. Plus, a triple product care that keeps the water path, nozzle and toilet free of contaminants.  Not to mention a night light, all-new wireless remote, heated seat and dryer, front and child mode, an eco-friendly function, waterproof design and so much more.