Nanoblocks are similar in design to a Lego brick but smaller, with the smallest brick being 4 mm × 4 mm × 5 mm.

This is from the Nanoblocks first Hello Kitty series featuring the cute White Kitty and the finished piece is exceptionally good. 

The pieces are small to handle so the set can be challenging for any one who is used to Lego sized blocks and obviously are not suitable for small children. 

The underside of the bricks are different from Lego bricks to because they use a dividing flange, known as the double-ridged backing system, instead of the tube system that Lego employs.

Please note I use Ebay Global Shipping so am happy to send worldwide.

If you have any questions please ask.