The new color of Delgado Blue Grotto is using multi-compressed (Plaques) PMMA which is just developed by Penlux. The material is combined multiple layers of PMMA. Each layer must be mirror polished, then high pressure with glued. The grip section uses brass material, so the balance of complete pen will be moved forward to the grip section. It will make more comfortable when you are writing. All the trim will be palladium plated.