Solution 1: Please empty the pockets(keys, coins, bobby pin, etc.) and remove the harder decorative objects (e.g. brooches) before use the washing machine.
Solution 2: In order to avoid clothing buttons and zippers make sound, close zippers and hooks, make sure the buttons are sewn on tightly and place small items such as socks, belts, bras, etc. in the wash bag.
Small items like loose buttons, keys and coins, left in the laundry may damage the machine.