Toddlers and babies will be thoroughly engaged by this clever Treehouse Stack-Up. A wooden toy stacker and block set in one, this toy allows little ones to stack, build, rearrange and have fun while discovering colors and shapes. The set allows for one tall treehouse or two short treehouses, but really the blocks may be configured in dozens of different ways for lots of open ended playtime. Independent testers including parents, educators and panelists gave this cool toy the National Parenting Center’s Seal of Approval in 2016. Manhattan Toy Company makes their wooden toys with sustainable wood and non-toxic water based finishes. Children 18 months-old and up will be safe when playing with this cute treehouse. Set includes 12 blocks.