Looks like a normal book， flipping the pages from downside is blank and white papers， but appears black and white patterns if in opposite directions. What's more， it appears colored patterns if you flip from the middle to the downside. What a magical book with different effects! Ideal as a gift for your lovely kids
Dimensions: 5.31 in x 3.94 in x 0.24 in (13.5 cm x 10.0 cm x 0.6 cm) Weight: 1.90 oz (54 g)