What sizes do flashlights come in?

All shapes and sizes. Mini flashlights conveniently fit on your key chain or in your pocket.  Penlights are aptly named since they are about the size of a ball point pen.  Medium flashlights are easy to carry, fit in your hand and are perfect for everyday use or trick-or-treating. And large flashlights and lanterns are ideal for camping or providing light when you need to brighten up a large area.