Guide children on a fact-packed interplanetary journey with 350+ reusable stickers in this interactive companion to Barefoot Books Solar System. Blast off on an interplanetary adventure with STICKERS! Guide children on a fact-packed journey through stickers! With 350+ reusable stickers, this interactive companion to Barefoot Books Solar System includes 24 pages of information and activities about our solar system. Learn about the planets, stars, space exploration, and more!