671 409 Smash. Junior. Recommended for young people from 10 to 16 years old. Medium and advanced players. Shape: Oversize with big impact area. Widht: 36 mm. Core: pretensed EVA of high memory. This is a foamed material perfect for preserving racket shape and perfect for giving good elasticity for the high-speed re-bound system. Frame: Tubular bydirection Fiberglass and Carbone. Weight: 350-375 gr Balance: power/control: 50/50