The Meffert's Pyraminx Marble Brain Teaser Puzzle is a colourful and educational 3D tria puzzle designed for children aged 7 years and up. Made from durable polycarbonate, this multicoloured puzzle features one piece and is perfect for solo play. With dimensions of 150mm in length, 120mm in height, and 100mm in width, this innovative toy challenges young minds to solve the puzzle by strategically moving marbles to achieve the correct configuration. The Meffert's Pyraminx is a great way to promote problem-solving skills and creativity in a fun and engaging way.