Young kids are fascinated by different tactile textures, sounds, and colors. We built all these sensory features right into the Anipack. The ear of the animal will make rustling sounds. Even the soft bouncy feet will produce squeaky sounds when pressed. Different materials ranging from polyester, cotton, faux leather, and velvet are sewn together to give the Anipack different sensations to the touch. Anipack weights only 4 oz. It is light and effortless for young kids to carry. Instead of a buckle, it uses durable Velcro that can be opened and closed easily by young kids. The elastic opening is designed so that no drawstring is used and it is easy for kids to retrieve stuff from the backpack. There is also a name tag sewn right on the cover so that it will never end up in lost and found.