Slater Design Endorfins KS1 Thruster Surf Fins Large Black/Black Single Tab backcountry High Area Design: Increased surface

High Area Design: Increased surface area enhances control and maintains speed through turns

A nylon drawcord with adjustable toggle secures the fit

Base: Knife-Cut TNT

the shorter cut keeps things light and easy

Crafted with a durable outer shell made from a partially recycled nylon blend

Slater Design Endorfins KS1 Thruster Surf Fins Large Black/Black Single Tab backcountry High Area Design: Increased surfaceHarness the quick, responsive feel trusted by Kelly Slater with a fin template that thrives when every turn counts. Designed to deliver fast, controlled pivots, this setup feels right at home in steep pockets and hollow waves, giving you the confidence to redirect instantly and stay connected through critical sections. The upright profile creates a lively, precise ride that rewards surfers who enjoy tight, snappy turns without sacrificing control.