Adapted from Hungarian patent application filed by Ernö Rubik in January 1975 for his cube puzzle.
170mm x 120mm (6 3/4" x 4 3/4"). Blank inside.
Individually wrapped in a compostable bag with a 120gsm recycled kraft envelope.
Printed with vegetable-based inks on a carbon neutral press using responsibly sourced, 300gsm Italian paper.
