Feature: Simple but magical: hold your door open properly to prevent slamming doors and doorknob impacts No Accident: there are always accidents when you squat to keep the traditional one in place or it cannot hold your door properly, but NO accident is guaranteed by this stopper Easy to remove: leave NO residues when you would like to stop using the stopper for your door For various surfaces: work well on parquet, laminate, cork, marble, tile and vinyl Easily installed in seconds with no need for drilling To use, start with a clean and dry surface, remove the protective sheet and stick it on the floor at your desired spot Best for home, office or school .