The colorful wool cloth makes the whole book feel soft to the touch, learn words while touching, and increase children's cognitive ability! Tactile games stimulate brain development and enhance your baby's sensory intelligence. This book uses high-grade felt cloth instead of traditional EVA foam material, making the book soft, lightweight, safe and non-toxic, suitable for 0-year-old babies. The colorful and bright colors of the inner pages give the baby visual stimulation and enhance the attractiveness of reading. Touching the embedded wool felt and shape with your hand can fully stimulate the tactile nerve and increase the sensitivity. (Happy Farm)