Wilson steam 99 ls tennis racket the wilson steam 99 ls tennis racket offers precision power and spin crafted with wilsons amplifeel 360 technology giving controlled responses and high manoeuvrability an open 16x15 string pattern and a head light balance tennis racket weight 227g unstrung balance 325cm headsize 99 square inches string pattern 16x15 wilson amplifeel 360 technology ergonomic grip wilson branding l0