The new Vertex 03 JR W is Delfi Brea's official racket, adapted for junior players, that features a similar surface to the adult racket, favouring development of the player. It is designed for high-level junior players. It is designed for high-level junior players. With a diamond shape, its external core is made from Polyglass fibreglass, its internal core from Evalastic rubber, and its frame from 100% carbon fibre CarbonTube. It has the Vertex core that supports maximum power and a perfect distribution of weight, eliminating vibrations.