Isometic Frame. MPCF Reinforcing Technology: Multi-layer carbon fibers plus exquisite handcraft accomplishes a reinforced quality racket with excellent performance.Carbon fibers are differentiated in toughness according to different angle. Because of that, the rackets are reinforced by the carbon fibers in an all-round way or even strengthened by multiple layers at specific points, which greatly improves the overall strength and durability of the racket.Elaborately produced by handwork instead of automatic batch production, the racket has minimal facial folds and stress concentration point at the frame bending part.Ultra Carbon:Made of ultra strong material, the racket has optimum rigidity to bear higher tension for exact and steady strokes.The racket made of super rigid carbon fibers with higher strength and rigidity and is bearable for more string pounds. The risk of frame deformation is also minimized.