The Quiksilver 2+1 retains the smooth feel of a single fin, and adds the side fins for "extra drive and hold. 1 x Single fin box and 2 x futures (single tab) side fins.
The centre fin is 7" with a 5" base
Side fins are Medium/large 4.5" base/4.75" high
Always buy from the official bravosurf site to ensure you are getting the best deal!