The Rush 4 has now been certified in MS and ML, with other sizes to follow shortly. The Rush 4 is the Delta 2’s little brother! We are extremely excited about this wing, and think that it represents as much of a leap forward in performance designs as the Delta 2 has proven to be. The Rush 4 has class-crushing performance, and some features which we have never before applied to the Sport-Intermediate class, including Ozone SharkNose Technology. For more information, see the Rush 4 page here, or navigate to it in your language.
Source: Ozone Paragliders