The wreath hanger is using clear plastic PET material and locking technology which is environmental and aesthetic that blend in beautifully with any decor and will not turn yellow or reduce adhesion over time. The vacuum suction hooks can hold up to 22 lbs and the curve of the sturdy hook is bigger so that is not limited to hanging small object. No need extra tools like glues, screws or nails, just a few seconds to finish installation, simply push and lock the suction cup on a smooth surface after cleaning with coming cleaning cloth. Lift the hook or use a flat blade to release the suction cup without any trace left like sticky residue or stains. Soak the suction cup hooks into the warm water ( 50-60) you can use it again after drying. The wreath hooks can securely sucks on window, mirror, glass, metal or other non-porous surface, it can meet your different needs that very convenient to organize bathroom, kitchen, bedroom, office, school, hotel or store.