I'm impressed! First off let me say that I love the metal coin bank box!! A collector, just like in my Grandmother's kitchen! As for the dryer balls.... They are quiet, but work phenomenally well. I have an XL Dryer and do very large loads (I can wash about 40 full size towels, plus hand towels, face cloths, kitchen towels, cloths, aprons etc. in one load) and these cut my drying time from 95 minutes to 55! Awesome!!