Bestamtoy 36 pcs. wooden stacking stones.
(Library Of Things)

Title from container.

36 stones: 8-(2.08 x 1.57 in.), 16-(1.57 x 0.98 in.), 12-(1.57 x 0.86 in.)

The stone blocks have many flat cut surfaces so the stones can be stacked and kids can stack different shapes of stones to the highest. Unlike regular building blocks, this wooden stone balancing and stacking game is a better way to stimulate a child's sense of challenge and develop their hands-on skills, promote creativity, resilience and persistence and to strengthen fine motor skills, visual-spatial skills, color recognition and thus training logical thinking.

3 years+.