uuio is a young label from Hamburg, founded by the trio Pia, Johann and Sebastian. With the construction system uuio TRE children can create their own constructions again and again - and so limitless fun. to have. uuio wooden toys promote creativity, motor skills and concentration. The blocks are made of solid oak wood in Germany and are crafted. Uuio's products are also great design objects - and this is incredibly important to the trio, because the goal is to create designs that will delight children and parents alike.