Babies will love tummy time with this beautiful concertina board book, with its high-contrast colours A gorgeous and gifty fold-out concertina board book that is perfect for tummy time. Tummy time helps to strengthen a baby’s back, neck and shoulders. The bold patterns and high-contrast colours throughout are designed to help stimulate a baby’s developing eyesight. In this beautiful new range of baby books, Tove Jansson’s much-loved world of the Moomins is brought to life for the very tiniest of bookworms.