Dado Cubes
This is a great American Made Toy, Safe and fun.  Don’t bother with Toys R Us, try Amazon…shipping is much faster.  Checkout our Store Front, Safe Toys page, or here is a direct link.

• Colorful and durable building blocks enhance spatial perception
• Interlocking slits in the blocks create an unlimited number of 3-D structures
• Set features 10 cubes, scaled from 1″ to 5″
• Blocks nest for easy storage