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;Grip-Tight bumpers hold seat firmly in place;Quiet-Close round-front seat and lid prevent slamming;Round closed-front seat;Contoured seat for user comfort;Antimicrobial agent inhibits growth of odor-causing bacteria, mold, and mildew. This product does not protect users against bacteria, viruses, or other disease organisms. Always clean and wash this product thoroughly before and after each use;Toilet seats are not returnable to Kohler Co. if opened or outside of original packaging