High contrast Pattern Cards are visually engaging and help young infants and newborn focus & lenghten their attention span. High contrast cards are to be shown to the infant from the time they are born to encourage learning. As high contrast cards are black and white, it suits their vision and helps them better understand their environment. these cards are age appropriate from 0-4 months after which you can switch to the coloured cards for the same. This set is specially curated to motivate repetition that helps learn better. The cards that an infant has seen in black and white are the same ones he/she is seeing in coloured. Repetition plays a major role in learning and remembering.