Deflow Margaux Longboard Fin, Stiff Flex

The Deflow Margaux is a longboard fin from the Pro Tech Collection, designed with surfer Margaux for a style of surfing that mixes responsiveness and trim. Its shape takes cues from 1970s architecture, with a yellow square in one corner, and Deflow says it gives more manoeuvrability than a pivot fin.

Key details

• Type: longboard fin
• Flex: stiff
• Sizes: 7.5in (lime green) and 9.8in (maroon)
• Range: Deflow Pro Tech Collection

Choosing a longboard fin

Check your board's fin box before buying, as the fin base must match the box fitted to your board. As a rough guide, a taller fin gives more hold and stability in trim, while a shorter fin is looser and easier to turn. Many longboarders pick fin height by board length and the type of waves they ride, so the 9.8in suits those who want more hold and the 7.5in suits a looser feel.

A stiff fin gives a direct, predictable response through turns, which suits surfers who like to drive off the bottom and hold a line in trim. Rinse fins in fresh water after use and store them out of direct sunlight.