XXP (stands for Xtra Xtra Power) is a short-lived Super Soaker series released in 1996. The series consisted of a mere 2 blasters, and were both very powerful air-pressured blasters. They offered the same performance as XP blasters, but had two nozzles mounted side-to-side for extra soakage. Although the series was briefly successful, it was overshadowed by the CPS series released also in 1996.
Though the series was discontinued, blasters like the XP Backfire, Monster XL, and the Double Drench, being released in 2001 and 2014 respectively, would re-explore this dual-nozzle method of blasting.