The rectangular animal packs are approximately 12" high by 10" wide and 6" deep not including the retractable handle. Each must-have piece of luggage holds just about anything a little girl or boy could ever need. Use as a traditional backpack or extend the handle and use as a rolling backpack on wheels. The backpack can be easily unsnapped from the trolley wheeled frame if needed and the straps are easily pulled out to use as a conventional backpack. Each has a zippered coin purse tummy. Animal Trolley Backpacks will be available in January 2006 in three styles — giraffe, elephant and tiger.