Freeline Twin

The Freeline Twin is a high-performance twin-fin Jack has been refining since 2017 — originally built for a few locals chasing that fast, skatey twin-fin feeling in a more responsive, everyday shortboard shape.

The bottom runs with a slight vee entry and just under flat through the front foot, blending into a double concave with vee out the tail for control and rail-to-rail responsiveness. A slight fluted rail just ahead of the fins subtly lifts the rail line and adds grip through turns. Combined with a tighter tail outline and rounded pin, the board offers a sharp, connected feel without losing that loose twin fin freedom.

Fast, lively, and tuned for everyday surf.

Scroll down for more examples and dimensions of this shape.

Overall Feel

Fast and responsive, with a bit more bite and control than a traditional twin.

Best for: Everyday waves, beachies, and performance surfing
Skill Level: Intermediate to advanced

Design Features

• Tail: Rounded pin — tighter arc and hold

• Rails: Mid to fine — sensitive and clean through turns

• Bottom Contour:

  • Slight vee entry

  • Just under flat through the front foot

  • Subtle double concave with vee in the tail

• Rocker: Low to mid — maintains paddle but still responsive

• Extras: Slight fluted rail near fins

• Fin Setup: Twin (Futures)

• Glassing: 6oz + 4oz deck / 4oz bottom

Available Sizes

All volumes are approximate due to handshaped construction.

• 5’6” x 19 5/8” x 2 3/8” — approx. 30.0L

• 5’8” x 19 3/4” x 2 7/16” — approx. 31.5L

• 5’10” x 19 7/8” x 2 7/16” — approx. 33.0L

• 6’0” x 20 1/8” x 2 1/2” — approx. 34.5L

• 6’2” x 20 3/8” x 2 1/2” — approx. 36.0L

• 6’4” x 20 5/8” x 2 5/8” — approx. 38.0L

• 6’6” x 20 7/8” x 2 5/8” — approx. 39.5L

Pricing

• $900 base price (clear, sanded finish)

Add-Ons

• Resin tint or pigment: +$75 per side

• Polish / gloss finish: +$120

• Fins supplied: +$120