The Extreme Jr. series helps children to start their tennis journey in the most comfortable way. The aluminum racquet features the unique Damp+ insert, which isolates the impact for fewer vibrations. The Extreme 21 is perfect for kids between 4 and 6 years. * Unstrung weight: 180 g / 6.3 oz * String pattern: 16/17 * Head size: 520 cm² / 81 in² * Balance: 305 mm / 0.5 in HL * Length: 535 mm / 21 in * Beam: 20 mm * Age: 4-6 **Item Dimensions Approx:** 53.5 x 27 cm (L x W) **Includes:** 1x Head Extreme Jr. 21 Tennis Racquet 1x Cover