Complete Collection of PreK-8th grade Silver Level backpacks. Prevent the "summer slide" and keep minds active with Crabtree's Summer Backpacks. Each Silver Level backpack includes 6 items: Welcome Letter, One fiction book, Two nonfiction books, and One high interest book in a Reusable drawstring backpack. The Welcome Letter introduces the parent and the child to the contents of the backpack and provides ways to use the books over the summer. Students will go on an exciting adventure in the fiction books. The nonfiction books will have students learning new facts and building background knowledge. The high interest book engages students to continue their reading with an entertaining topic. With the cloth, drawstring backpack, the summer reading journey can be taken anywhere.