Free shipping on all orders over $50
7-15 days international
26 people viewing this product right now!
30-day free returns
Secure checkout
70821597
Replacement Blue Spines, as well as Green Spines which articulate 60° 'toe down', and 0° 'toe up', and Yellow Spines which articulate 75° 'toe down', and 20° 'toe up' are sold separately. Spines may be interchanged or mix and match as desired while customizing the fins for preferred kicking styles. Truefin is 100% non-metallic and has a negative buoyancy of -0.5 ounces per fin in salt water (excluding heel strap). U.S. Patent # 9,764,192, 10,071,288, 10,226,668, 10,525,307, 11,135,480, and other patents issued and/or pending in the United States and China. Machine endurance tested to 1,000,000 kicks without failure, please visit Truefin for more testing information. Made in U.S.A., Limited Lifetime Warranty
INNOVATIVE TECHNOLOGY: Engineered to mimic nature, Truefin Model 110 swim fin is designed with modular spines that lock into the fin and limit the flexibility of the blade to an optimum ‘angle of attack’ at all kicking frequencies for unparalleled efficiency and power over spineless swim fins. SIZE LARGE which generally corresponds to men's US size 9-11 and women's size 10-13 depending on thickness of boot. SEE SIZE CHART.
FASTER & MORE EFFICIENT: The patented fin technology creates a diving fin that is up to 2X the thrust, and up to 65% better efficiency than leading spineless fins. The upper surface of the foot pocket is made from a tapered thin wall of flexible Monprene to maximize comfort at the top of the diver’s foot.
HIGHLY FLEXIBLE: Being highly maneuverable, Truefin is ideal for spearfishing. The artificial spines prevent the blade from collapsing during shore diving and provide fast acceleration when in surf, in rough seas, big swells, and in currents around reefs. Open heel design, booties generally required but not included in purchase.
PORTABLE: Modular spines may be removed and disassembled for easy traveling and storing. Included is the Trident R559 Medium Standard Spring Style Fin Strap with Quick Release Side Tabs (Truefin is provided with a popular style of heel strap posts - 20mm flange/13mm throat).
MADE IN THE USA: Limited Lifetime Warranty(excluding heel straps). Machine endurance tested to 1,000,000 kicks without failure. Truefin is shipped with standard Blue '412 spines installed. Standard Blue Spines articulate 60° 'toe down', and 20° 'toe up' and are suitable for all kicking styles.