Not all young students have the same physical features, nor do they grow at the same rate – making it necessary to revise the concept of the study desk, properly fitting it out at different times and improving it. Tris-Tras emerged out of these considerations; it is the first desk that adapts to the needs of the child. This new product line is the first of its kind in educational furniture that adapts the product to the user, and not the other way around. In fact, it is the first product certified by the AEE (Asociación Española de Ergonomía).