Plamo Block is to Nanoblocks, what Nanoblock is to Lego!
I could only get hold of 2 packs each of this product it's that hard to come by - very rare and very collectible.
Check out the pictures for size comparisons - it's more of a hobbyist product than a casual build, as you need to remove the bricks from the moulding spurs with a knife - and some people might need to use tweezers to build the product. I was okay in building with my fingers, but I'm quite dextrous - so you might not be able to.
The boxes are slightly tatty as it's been on an amazing adventure from Japan!