Perfect for power snaps in critical sections this fin set up offers quick acceleration and response in punchy hollow waves. :: Unisex > Surf Accessories. Conditions: Hollow steep waves. punchy beach breaksFin Material: Performance CoreApprox. Rider Weight: 65 - 80kg / 145 - 175 lbsBoard Types: Performance boards with deep concaves and moderate to extreme\n rocker Size: one size.