HEAD Boom PRO The new BOOM PRO combines explosive power with the sensational feel of the innovative new Auxetic construction, allowing you to compete fiercely while enjoying every moment. Developed for advanced tournament players and with a brand-new shape for HEAD, BOOM PRO provides the greater stability and higher weight you seek, while boosting your power and confidence. • Explosive power • Sensational feel • New racket shape • For advanced tournament players • Greater stability thanks to higher weight CPI: 400 WEIGHT (UNSTRUNG): 310 g / 10.9 oz STRING PATTERN: 16/19 HEAD SIZE: 630 cm² / 98 in² GRIP SIZE: 1-5 BALANCE: 310 mm / 1.3 in HL LENGTH: 685 mm / 27.0 in BEAM: 22