This set of 10 books teaches your little ones all about their favorite ocean critters. Made using recycled paper and earth-friendly, vegetable-based inks, the chunky books stack up in a reusable, totable tower for easy storage and travel.98% recycled paper, vegetable-based ink. 3.5" x 3.5" x 8.13". Set of 10. Recommended for ages 3 and up. Imported.