Packaged to flat to hold an animal, sides never returned to stabilized position. Returned after several days, awaiting, the carrier had many good construction points. It was this one issue that initiated its return, did not want my kitten, in an unstable, wobbly state, during an already, unsettling,  enclosure and into different environments, they might experience, in this carrier. Shipper needs to revise packaging. I returned, sadly.