Ghost fins are light, elastic and feature an attractive design.
 
The blade is produced with an innovative transparent elastic technopolymer.
 
This material allows for excellent elastic return of the blade, whose performance is surprisingly close to that of carbon fiber blades.  Ghost fins are equipped with  black 250 foot pockets.
 
Ghost fins with transparent blade are ideal for spear fishermen looking for maximum camouflage. The transparency of the blades allows it to blend in perfectly with the underwater environment, making the approach to prey more discreet and effective. They are idea for those who want a competitive advantage in spearfishing.
 
Ghost offer powerful thrust and superior energy efficiency, ensuring longer, less tiring dives and they are the ideal choice for both professionals and leisure divers.
 
These fins are the result of years of advanced research and countless molding tests carried out in our production department. Every detail has been carefully studied to guarantee the highest quality.
 
Before being  marketed,  Ghost fins have undergine rigorous laboratory and field tests, ensuring unparalleled durability.
 
Specifically, they were tested for 7 consecutuve weeks, for 24 hours a day on our robot blade testing machine in the  pool, lasting more than 1,411,200 cycles in continuous motion.
 
Having passed laboratory tests, thanks to the collaboration with our team of athletes around the world, Ghost fins have been tested for more than two years at sea and in the pool, confirming their excellent elastic performance and resistance.
 
We are particularly proud to be the only ones in the world today to manufacture and market a transparent technopolymer blade featuring these amazing performances.
 
The assembly of the blade on the footpocket without side horns, already created by C4 in 2006, allows an elastic bending of the blade along its entire length.
 
Anatomy
The 3° pre-shaped anatomy of the 250 makes it particularly comfortable to wear.
The reduced thicknesses fit the shape of the upper to the shape of the foot, without painful constraints.
 
Material
The polymer used for the 250 foot pocket is particularly elastic and allows for an easy and simple fit, thus improving comfort. The insole allows to have a stiff footpocket in the sole area but comfortable in the upper.
 
Transportation
The 250 footpocket features a simple assembly of the blade thanks to a single sturdy M6 screw. The assembly and disassembly of the blade is quick and simple and the overall dimensions are optimal in case of air travel.
 
Advanced polymer blade
The best result is achievable only by combining a top quality footpocket with a highly performing blade. The new Umberto Pelizzari are designed with blades that put together all the elements needed: high quality materials, a futuristic design, advanced manufacturing and great mechanical resistance.
 
Materials
The design and material of the blade are key features to obtain both softness, high elastic return and strong resistance to breaking. C4 has selected and tested many different polymers, selecting two blends, one for the Soft version and one for the Medium stiffness blades. These two solutions guarantee extremely high performance and resistance.
 
Integrated water rails
A key element feature by the C4 Umberto Pelizzari fins is the fact that the water rails are over-moulded on the blades. The length (30.2* cm), the variable height (max 17.8* mm), the thickness (3.3* mm) and the material (thermo rubber) are another important feature of these blades. The result is a blade that works perfectly with no interference from the water rails and minimal lateral sliding of the fin.
 
Design
The blade features a central smooth and glossy band which widens from the foot-pocket to the tip of the blade. On the sides, the surface feature a carbon fiber finish look. On the back side of the blade, the finish of the surface is exactly the opposite.
 
The tip of the blade is shaped as whale’s tail. The blade is 59 cm long at the center and 62.5 cm laterally. The measure takes into consideration the length from the tip of the foot-pocket to the end of the blade. The total maximum length of the blade is 79.5 cm, while the total maximum length of the fin, so including the foot-pocket, it is 91 cm.
 
Two long ribs are featured laterally on both surfaces of the blade, but they are 5 cm longer on the top side. On the back side of the blade there is an additional central nerve which runs almost all along the length of the blade. On the back surface, just before and after the tip of the foot-pocket, there are two 16 cm long ribs, 15 mm wide and 9 mm long, with an almost triangular section. The thickness in front of the foot-pocket is 3.4 mm, and goes down to 1.6 mm at the tip of the blade.
The angle of the blade is 29°, which added to the 3° angle of the C4 250 foot-pocket, brings the total angle to 32°.
 
Low weight
Today the C4 Umberto Pelizzari fins are by far the lightest on the market of long polymer blade fins. They weigh less than 1200 grams a pair.