The Flyfoil “J-Concept Carbon” is the most popular FlyFoil® Model. Available in three sizes 3’6″, 4’0″ and 4’6″. This is a super-compact lightweight performance kitefoilboard. This model is based on our super-successful “Carbon-Concept” Model. Featuring a similar concave deck, soft rails, chine-curve bottom, and subtle nose-scoop to complete the package. Equally at home freefoiling, or foilstyling. This model features the Universal US-Box Track Mount system to attach most foil systems, and allow for any micro-adjustments required for different riders and ride-styles.