Great book. It is hardcover however it is definitely for babies or up to age 3years old. . It is in its simplest form. Not for age 4 and up that are really emerging readers.
I bought this for my granddaughter and she loves it. She was 1 & 1/2 years old. I previously bought her 'The Hungry Caterpillar' (same author) and she enjoyed that too.
Nice addition to Eric Carles Hungry Caterpillar collection. Finding the hungry caterpillar and his other friends on each page make it an added I spy book.