DESIGN & DETAILS: Wilson Energy XL Adult Recreational Tennis Racket - Grip Size 3 - 4 3/8" V-Matrix Technology creates larger sweet spot for increased power AirLite Alloy construction creates lightweight frame with power and durability Stop Shock Sleeves reduce string vibrations at 3 & 9 for improved feel Oversized head generates impressive power and added forgiveness with enlarged sweet spot Extra length provides extended reach and court coverage Pre-strung