Review on Understanding Russian Hexagons: A Fun and Educational Geometry Kit for Kids by John Surabhi

The hexagon is MUCH better made than Russian blocks and can be given as a gift while the block puzzle is not. If you buy elsewhere you'll pay about $10 for a hexagon. Also included: storage bag + cheap block puzzle (with error "IntellEgence". The print on the other set is also bent). Packed in a zipper. It's up to you to decide if it's worth $12 :) The colors of the puzzles are darker than expected. PS I will use a hexagon puzzle and a slightly modified storage bag as a small gift. A block puzzle I will leave for family use, although cheap it can still be used and solved in the same way as more expensive puzzles.