These bowls can be connected like a puzzle, hence the product name. Thanks to their modularity, they fit together in any direction. The stackable glass bowls take up only little space in cupboards and offer different usage applications. They are made in Slovenia from pure glass. The glass can be washed in dishwashers up to 3,000 times without leaving any visible traces on the glass. Moreover, Puzzle is suitable for microwave ovens and does not contain any heavy metals.