FinJak - Green Flash Cooler mid-crown height

mid-crown height

but not the kind you're used to

the built-in insulation will keep you warm without sacrificing mobility

Greenough redefined the possibilities of single fin performance with the Stage-6 as it shares the same surface area as other fins

From Nomadix:

FinJak - Green Flash Cooler mid-crown heightMade of hi strength Acetal resin, the Finjak replaces the stock screw and sliding plate and eliminates the need for tools to install, remove, and adjust the position of the classic Bahne style fin. Bill Bahne introduced his Fins Unlimited box in 1971, and the Bahne based removable adjustable fin system remains the standard for classic single fin and 2+1 equipped surfboards and stand up paddle boards. The convenience of a fast, tool free fin system