Grimm's Boat Stacking TowerDescription One of our favourites from the Grimm's collection. The Boat stacking tower is perfect for children learning to stack and sort. This open ended wooden toy can be combined with the rest of the Grimm's collection as well as any other toys in your house. Great for hand eye coordination but also for 'picture forming' how many goes until you can remember how to make the boat again? Spec 11 building blocks for stacking. Materials: lime wood, non