O'Neill Heat 5mm Round Toe Boot Thruster Fins The F4 is a small

The F4 is a small size template that works best for groms or lightweight surfers

Large (165lb - 200lb)

Cut outs enhance board feel and increase grip

PAD OVERVIEW

The Blackstix material and V2 foil give this fin a springy flex pattern

O'Neill Heat 5mm Round Toe Boot Thruster Fins The F4 is a smallTheO'Neill Heat 5mm Round Toe Boot is just one of those boots that will never let you down. No frills but no surprises, and the next time its firing, and you are pulling on your boots, you will know these won't let you down. Features: FluidFlex Round Toe Interior Taped Seams Glued and Blindstitched Seams Anti Flush Shin Strap Forefoot Strap Heel Pull