The contrast on these is no joke — my 3-month-old stares at the bold patterns during tummy time way longer than she does with her other toys. The cards are nice and sturdy too, so they hold up fine when she inevitably grabs at them.
Matthew★★★★★
My 7-week-old actually tracks these cards across the crib, which I didn't expect so soon. The patterns are bold enough that she locks on right away, and tummy time fussing has dropped a lot since we started propping one up in front of her.
Thomas★★★★★
The black and white contrast is no joke—my 2-month-old tracks the cards back and forth like she's watching a tennis match. They're thick enough that she can grab at them without bending, which is a nice bonus.