Finely sanded and left either au natural or finished with a light polymerized linseed oil rub, this set of 30 Classic Building Blocks features rounded corners and exposed full wood grain. Each all-natural, organic block measures approximately 1.5" square. "Promise Brand Classic Building Blocks are 100-percent non-toxic [and] organic. Sure, they are also the most aesthetically pleasing block on the market, but what really sets them apart from the competition is their all-natural status," Alisha Alway Braatz, manager for Promise Brand, told TDmonthly. Launch date: May 2009.