Between the ages of 0 and 3 is the golden age for baby brain development. Activate the baby's visual nervous system through black and white card and colour card Promoting whole brain development and matching light and shade, Perception of graphics. Improve observation, curiosity, and the ability to explore. It's great for your baby's vision development and brain development!
size:14cm*14cm Paper thickness: 350 grams of green copper plate card Material: double-sided submembrane waterproof and non - reflective