The first idea that comes to most parents mind when they see these hexagon building blocks is to build with it existing and imaginary structures. However, using this toy you can teach your toddler a variety of life skills even though it is recommended for preschoolers and up.
I introduce toys to children as soon as the child can play with them safely with my supervision. At 12-14-months of age the child is ready to learn from this toy. Younger children put everything in their mouth and the single hexagon is too small to hand it to them. A 12-month-old might still be mouthing so in that case do not hand them the single hexagon yet. However, you can play with the other, larger pieces. Use this toy to teach them that they cannot mouth everything.
If you want to hand the toy to the child to play independently with, than this toy should be given to children 3+. Just like the package says. Probably even better to give it to a 4-5-year-old. The 5-year-old will have the interest, the understanding, the patience and the cognitive/motor capacity to disciple what this toy can offer.