Grimm's Large Montecarlo Curves - Big, Giant, Chunky Wooden Curved Blocks, 4x4 Size This truly unique set of blocks will inspire creative building and imaginative play Handcrafted in Germany by skilled European toymakers, Grimm's Spiel und Holz Design Combine easily with other construction/building toys; especially compatible with other sets in Grimm's Large 4x4 building blocks family Sustainably harvested wood is finished with certified child-safe, water based stains (no paint or varnish) -- Perfect for stacking! Large Curves blocks vary in size, shape and color; All have a thickness of 4 cm (1.6 inches); Lengths vary from about 4 inches to over 10 inches