The FCS II Carver Neo Glass Tri Sage - M by FCS is for the surfer wanting lots of drive and speed down the line. These fins are great for power surfing and sweeping turns on open faces. The extra sweep in the Carver gives it heaps of control off your bottom turns and when carving lines on the open face. Ideal for power surfers who push on their back foot and draw out their turns. The Carver is good for down the line waves, open faces and is particularly good in reef breaks. Weight Range 65 - 80kg's. Surfboards with deep concaves and moderate to extreme rockers are recommended for use with these fins.