Patented, easy adult use toilet lock. Helps prevent lids from slamming down or children falling into the toilet. Installs without tools. Fits most standard toilets. Durable, all plastic construction. For best results this item must be applied to a clean, dry surface. Warning: This item, like all child safety items; are child resistant not child proof. Safety items may not stop a persistent or determined child. The best child safety requires constant adult supervision.