Head Youtek Graphene Speed S Tennis Racquet A lighter version of the Speed Pro used by Novak Djokovic, the S version of the Speed series is ultra maneuverable at 10.1 oz. unstrung. Excellent choice for juniors or smaller ladies. Also makes a great doubles racquet. Headsize: 100 square inches / 645 sq. cm Weight: (unstrung) 10.1 oz / 285 grams (strung): 10.6 oz / 300 grams String Pattern: 16 Mains x 19 Crosses. Racquet is strung at mid tension and does not include a cover.