Tetra color pen

Tetra is an amusing color marker with interactive building toys for kids. It’s made of interesting shape and combined form to create an opportunity for creativity extends beyond the page. The shape of a simple compound makes it easy to press and pull out. Also, kids can put each compound together to form a shape and explore to build the new shape like a geometric shape, animal, flower, abstract shape etc. And it’s up to their Imagination bend the rule and come up with new structures.