One-handed open/close lever design makes it easy to flip back to pour and forward to close. Package includes 4 pack salad dressing shakers. Color: black, white, green. Great for making, mixing, serving and storing dressings, sauces and marinades. The capacity of salad dressing container is 7oz/200ml. Milliliter and ounce markings are printed on the sides for easy measurement. The salad dressing mixer bottle is made of PP material, and free. Dishwasher safe. The shaker allows to concoct dressings and sauces in a flash, and store or pour with no spills. Tip: Make sure the lid is closed and flip the top lever forward to prevent leakage during shaking.