The T-rex with Sunglasses Backpack comes with one main pocket, one front pocket, one hidden zipper compartment and two water bottle pockets. Perfect kids backpack for boys from preschool to kindergarten to travel on their shoulders. A buckle on the front chest is used to prevent children's shoulder straps from sliding off. There is a whistle on the buckle. Children can blow it in an emergency and attract the attention of others. Store their daily essentials, toys, homework and snacks inside.