4.5" diameter clear pre-punched deli cups are perfect for displaying small reptiles like baby or juvenile geckos, beardies, chameleons, frogs, small snakes, and delicate creatures like spiders at trade shows. A cup that is a little bit of a snug fit for your animal is better than one that allows too much room, as everything is bound to be jostled around in transit to the show (excessive room allows greater chance of injury as the animal can bounce around more inside the cup).