Works well, and the charcoal dies out quickly when you close the top and bottom vents.  You can grill chicken on this unit if you leave the lid on while cooking.  If you want to grill steaks or burgers it's better to keep the lid off in order to get a nice hot fire while cooking.  Works great for roasting marshmallows too.  The size makes it just right for sitting atop the grate on those old school park grills.  This unit is very portable and the lid can be secured to the bottom with a bungee cord and clasping underneath.