NO LEAKThe dish scrub brush uses press-type mechanical release. It can control the amount of detergent used accurately. When not in used, the outlet is completely sealed for leak-proof. DURABLE & COMFORTABLE Thicker rubber and solider materials are used to make brush durable but not too heavy. The ergonomic handle is comfortable to be held and non-slip in wet soapy conditions. UPDATE BRISTLES there are hard-nylon bristles instead of normal plastic bristles on brush head. The bristle has double layer. The outside orange bristle is hard and the inside white one is soft. The brush can easily clean dishes pots and other kitchen wares. REPLACEABLE HEADSThe brush head can be easily replaced with a new brush head. Just twisting and removing the old one. Then, replacing a new head, twisting and locking it. CONVENIENT TO USEThe brush is easy to open and refill detergent. Just pressing the button, it can release dish soap on-demand. The water-drop shape design on the bristle surface, covering more area, makes it easier to clean corners and gaps. The scraper on the head back can effectively remove stubborn stains.