A mind braking puzzle. Rotate the plastic case to match the coloured balls. Stimulates logical thinking.A puzzle that will make you lose your marbles. It develops logical thinking and hand eye coordination key features stimulates logical thinking a mind braking puzzle rotate the plastic case to match the coloured balls specifications brand - Virgo Toys type - brain - drain puzzle age - 3 to 6 years colour - Multicolor box dimension - 6 x 6 x 16 cm dimension - 6 x 6 x 16 cm items included 1 brain - drain puzzle.