Grip-Tight installation hardware makes it easy to fasten the seat-everything is done from above the bowl;ReadyLatch hinge provides a positive lock/unlock latch to securely hold seat in position, yet seat easily removes for cleaning or adjusting fit;Quiet-Close elongated lid and seat prevents slamming;Grip-Tight bumpers hold seat firmly in place;Light intensity designed to provide enough light to see the toilet without disrupting nighttime vision;Choose between three brightness levels: a soft glow or brighter illumination;Dual LED lighting offers guiding light when lid is down and task light when lid is lifted;Illumination cycle with automatic 10-hour nightlight;Battery-operated - no electrical cords required;Up to six months of battery life (uses 4 AA batteries, not included);Contoured seat for user comfort;Color-matched plastic hinges;Toilet seats are not returnable to Kohler Co. if opened or outside of original packaging