Wilson Burn 100 ULS Tennis Racquet At 9.3 oz unstrung, the Burn 100ULS is the lightest Spin Effect Technology racket The Ultra Lite weight is effortless to swing with easy-to-play performance and power Headsize: 100 sq. inches Weight: (unstrung) 9.3 oz / 263 g (strung) 9.8 oz / 278 grams String Pattern: 18x16 - Racquet is strung and ready to use. Does not include a cover