This an advanced version of Hiroshi Iwahara's Bean Bag Drawer puzzle box. Crafted in 2015 for select Karakuri members, this box is somewhat complex to solve. Shifting slats will reveal a double partitioned drawer! Created in 2015 as a Christmas present for select Karakuri members. Made of Walnut, Oak, Maple, Magnolia and Bubinga. Measures* 5.31 x 3.66 x 3.66 inches Comes with gift box and opening diagram.