1
/
of
2
C4
C4 Surfer Fin Blades
C4 Surfer Fin Blades
1.0 / 5.0
(0) 0 total reviews
Regular price
$69.00
Regular price
$99.00
Sale price
$69.00
Unit price
/
per
Shipping calculated at checkout.
Couldn't load pickup availability
(BLADES SOLD IN PAIRS)
(300 Foot Pockets SOLD SEPARATELY)
300 FOOTPOCKET SIZES (Black or White):
European sizes: 36/37 - 38/39 - 40/41 - 42/43 - 44/45 - 46/47 – 48/49
US/Canada sizes: 4/4.5 – 5.5/6 – 7/8 – 8.5/9 – 10/11 – 11.5/12.5 – 13/14
300: THE PROJECT
1/3 tradition, 1/3 innovation, 1/3 di design, add (sea) salt to taste. This is the recipe for our 300-foot pockets. 300 feature an elegantly balanced shape in a few hundred grams. The technology behind this product is mainly focused on volume reduction. Volume is in fact the primary cause of foot pockets' “weight” in water, which then requires a bigger effort when kicking water. So, the higher the volume of water, the bigger the effort. Reducing volume, weight is reduced, and therefore reducing the ‘sinking’ effect. A 300-foot pocket size 40-41 only weighs 315gr. Compared to 600-750 gr. of standard shoes on the market.
300: HYDRODYNAMICS
Hydrodynamics: an efficient performance is based on resistance reduction. 300 fins' elegant shape could have easily been designed by lines of water flowing on your feet without interruptions and only ongoing smooth lines. Hydrodynamics is key to reducing divers’ fatigue and these footpockets' shiny look combines beauty and performance.
Big Square HYPERTECH
Lighter and stronger, more responsive and safer. These composite blades are made with carbon fabric HYERTECH – Big Square. The use of the innovative method of production, Spread Tow instead of yarn, optimizes the structure. Less intersection between the fibers and less undulations greatly reduce the absorption of energy. Using fins this means the blade's great reactive elasticity, what else?
300: FORCE CONTROL
The foot on blade thrust position is about 30mm back, it lies between the toes and the metatarsus. Longerons are short where the toes are and continue under the foot pocket towards the heel. They are an uninterrupted line of energy distribution between foot and blade. Longerons progressively transfer energy to the blade, allowing exceptional bending curves. Blades continue for over 20mm inside the 300-foot pocket towards the heel. Special blades must be produced to perfectly fit the 300-foot pockets.
300: SAFETY & TIME
Blades are connected to the foot pockets by two special Hilo screws, for a better mechanical seal and energy transmission. This mechanical solution, in addition to making blade replacement much easier, prevents blades from being over-stressed.
300: A UNIQUE ANATOMICAL SHAPE
The 300 unique footwear anatomy is obtained by superimposing the shapes of our right and left anatomical foot pockets, the Mustang, with their 3°angle. Angle is also maintained in the 300-foot pockets. The 300 modular foot pocket anatomic shape is designed to tightly fit to the feet so that energy is transmitted to all foot areas. Thanks to this anatomical design, the energy dispersion caused by unwished gaps between foot and foot pockets, is the least possible. Force is naturally applied with the least effort. Fitting and comfort are extremely high thanks to the innovative material used to manufacture the 300-foot pocket shoes which also allows for a 7 times higher resistance compared to other traditional materials.
29° + 3° = 32°
The design of modern fins is mainly focused on achieving better performance by increasing the total angle between the foot and the fin blade. The foot pocket blade angle must be amplified. In the case of a low angle, stiffness of blades will result in fins with a reduced performance. Softer blades with a wider agle will result instead, in stiffer fins. C4 foot pockets do not create this problem; all C4 anatomical foot pockets have a 3° angle. The blade angle is 29°, a value much used on modern fins which determines a greater preload, making the blade more reactive. Such 29° solution, reaches an angle of 32° thanks to the 3° angle of the patented C4 footpockets providing for an excellent kinematic performance.
D.P.C. Double Parabolic Curve
Does the blade work best when it bends completely? From heel to toe !! This is possible thanks to the double parabolic curve of blades, from heel to toe. A neutral intermediate bottom and two progressive declining curves. Thus it fully exploits the shovel and its elasticity.
ONCE UPON A TIME
In the past, to dive at very high depths, fin blades, longerons, and foot soles had to be extremely stiff. This was the only way to achieve performing fins. Nowadays, blades are soft and performing, therefore modifying the divers’ athletic movement as less effort is required. This is diving, not skiing, and not even climbing, where strength is key. Modern blades can bend under a few hundred grams. Stiff foot soles and foot pockets are not necessary any longer as they even limit divers’ performance. C4's goal has always been to create products that allow for fluid and constant movement in the water. As a matter of fact, footpockets must serve divers helping them to freely move their feet. This is why C4 300-foot pockets’ calibrated stiffness, in combination with modern soft and angled blades, offer an amazing swimming experience. This is what modern divers require, nothing more than that: a really efficient performance.
C4 has over thirty years of experience in designing and manufacturing advanced carbon fiber equipment, in Italy. Our history is at the base of our brand success.
(300 Foot Pockets SOLD SEPARATELY)
TECHNICAL DATA
- MATERIAL: High-modulus plastic
- BLADE DIMENSION: 814 x 192 mm
- BLADE HARDNESS: 30 medium
- FINS ANGLE: 29°blade + 3°footpoket = 32°
- FINS WEIGHT: 647 gr. in size 40/41
- FOOT POCKET WEIGHT: 316 gr. in size 40/41
300 FOOTPOCKET SIZES (Black or White):
European sizes: 36/37 - 38/39 - 40/41 - 42/43 - 44/45 - 46/47 – 48/49
US/Canada sizes: 4/4.5 – 5.5/6 – 7/8 – 8.5/9 – 10/11 – 11.5/12.5 – 13/14
300: THE PROJECT
1/3 tradition, 1/3 innovation, 1/3 di design, add (sea) salt to taste. This is the recipe for our 300-foot pockets. 300 feature an elegantly balanced shape in a few hundred grams. The technology behind this product is mainly focused on volume reduction. Volume is in fact the primary cause of foot pockets' “weight” in water, which then requires a bigger effort when kicking water. So, the higher the volume of water, the bigger the effort. Reducing volume, weight is reduced, and therefore reducing the ‘sinking’ effect. A 300-foot pocket size 40-41 only weighs 315gr. Compared to 600-750 gr. of standard shoes on the market.
300: HYDRODYNAMICS
Hydrodynamics: an efficient performance is based on resistance reduction. 300 fins' elegant shape could have easily been designed by lines of water flowing on your feet without interruptions and only ongoing smooth lines. Hydrodynamics is key to reducing divers’ fatigue and these footpockets' shiny look combines beauty and performance.
Big Square HYPERTECH
Lighter and stronger, more responsive and safer. These composite blades are made with carbon fabric HYERTECH – Big Square. The use of the innovative method of production, Spread Tow instead of yarn, optimizes the structure. Less intersection between the fibers and less undulations greatly reduce the absorption of energy. Using fins this means the blade's great reactive elasticity, what else?
300: FORCE CONTROL
The foot on blade thrust position is about 30mm back, it lies between the toes and the metatarsus. Longerons are short where the toes are and continue under the foot pocket towards the heel. They are an uninterrupted line of energy distribution between foot and blade. Longerons progressively transfer energy to the blade, allowing exceptional bending curves. Blades continue for over 20mm inside the 300-foot pocket towards the heel. Special blades must be produced to perfectly fit the 300-foot pockets.
300: SAFETY & TIME
Blades are connected to the foot pockets by two special Hilo screws, for a better mechanical seal and energy transmission. This mechanical solution, in addition to making blade replacement much easier, prevents blades from being over-stressed.
CONCAVE SHAPE
The blade's concave shape pushes water flows toward the blade core. This provides fins with an immediate elastic reaction to the movement coupling, allowing rapid restarts, therefore resulting in excellent energy transmission.
300: A UNIQUE ANATOMICAL SHAPE
The 300 unique footwear anatomy is obtained by superimposing the shapes of our right and left anatomical foot pockets, the Mustang, with their 3°angle. Angle is also maintained in the 300-foot pockets. The 300 modular foot pocket anatomic shape is designed to tightly fit to the feet so that energy is transmitted to all foot areas. Thanks to this anatomical design, the energy dispersion caused by unwished gaps between foot and foot pockets, is the least possible. Force is naturally applied with the least effort. Fitting and comfort are extremely high thanks to the innovative material used to manufacture the 300-foot pocket shoes which also allows for a 7 times higher resistance compared to other traditional materials.
29° + 3° = 32°
The design of modern fins is mainly focused on achieving better performance by increasing the total angle between the foot and the fin blade. The foot pocket blade angle must be amplified. In the case of a low angle, stiffness of blades will result in fins with a reduced performance. Softer blades with a wider agle will result instead, in stiffer fins. C4 foot pockets do not create this problem; all C4 anatomical foot pockets have a 3° angle. The blade angle is 29°, a value much used on modern fins which determines a greater preload, making the blade more reactive. Such 29° solution, reaches an angle of 32° thanks to the 3° angle of the patented C4 footpockets providing for an excellent kinematic performance.
D.P.C. Double Parabolic Curve
Does the blade work best when it bends completely? From heel to toe !! This is possible thanks to the double parabolic curve of blades, from heel to toe. A neutral intermediate bottom and two progressive declining curves. Thus it fully exploits the shovel and its elasticity.
ONCE UPON A TIME
In the past, to dive at very high depths, fin blades, longerons, and foot soles had to be extremely stiff. This was the only way to achieve performing fins. Nowadays, blades are soft and performing, therefore modifying the divers’ athletic movement as less effort is required. This is diving, not skiing, and not even climbing, where strength is key. Modern blades can bend under a few hundred grams. Stiff foot soles and foot pockets are not necessary any longer as they even limit divers’ performance. C4's goal has always been to create products that allow for fluid and constant movement in the water. As a matter of fact, footpockets must serve divers helping them to freely move their feet. This is why C4 300-foot pockets’ calibrated stiffness, in combination with modern soft and angled blades, offer an amazing swimming experience. This is what modern divers require, nothing more than that: a really efficient performance.
WATER RAILS TUNNEL
Ancient Romans, 2000 years ago, used to say: “In media stat virtus”, virtue stays in the middle. TUNNEL water rails (patented by C4 ) stand between EVO water rails for fishing and CONSTANT water rails for freediving. They are suitable for long and soft blades. They are designed to create a partial “tunnel” that better directs water when kicking. Preferably to be used with 300-foot pocket fins with short longerons.
MADE in ITALY
C4 has over thirty years of experience in designing and manufacturing advanced carbon fiber equipment, in Italy. Our history is at the base of our brand success.
Share
