Fins FROG PLUS EBS

FROG PLUS EBS is a fin of new conception regarding materials and design but that enjoys the exclusive features of Cressi diving fins maintaining the spirit of the legendary Frog fin.

It is made of a new version of low-module propylene that, with a particular structure, combines a great flexibility, softness and resistance to an exigent use (even as renting fin or in diving centers), durability and aesthetics previously unknown in fins projected with that philosophy. Frog Plus Ebs are the authentic 4x4 Cressi fins.

Materials

The combination of 3 different materials guarantees the optimization of the requirements in every area of the fin without the need of increasing thickness:

• Main propylene body: this material, inherited from apnea fins, has as main feature the extremely rapid energy transmission applied and its great structural rigidity. It is applied on the blade and on the internal sandwich sole area. It is really nervous and reactive and facilitates an effective and agile flutter. It has a relationship effort-efficiency clearly superior to traditional materials (natural or thermoplastic rubber, polyurethane, EVA). It also has a great resistance to breaks to the point that Cressi guarantees it lifelong to a sportive usage.

• Flexible elastomer: it’s applied on the foot pocket and on areas that require flexibility and elasticity, because that influences the diver’s comfort (on the foot pocket’s forefoot, the sole’s interior and the instep area that is in contact with the anckle). It’s also applied on areas that require anti-slip capacity: on the sole (only the floor contact area) and on the blade sides. The fusion of both materials is produced at molecular level and its solidity is guaranteed lifelong to a sportive usage.

• Compact elastomer: it’s flexible but not elastic. It’s applied on areas that require a rubber composition, anti-slip but strong and of great resistance (on the longitudinal ribs, foot pocket’s sole and foot’s head strap). This material links the energy transmission critical point (the instep) with the nerves in a single piece, avoiding the usual energy loss through extremely flexible components of the foot pocket that produce a heavy and slow flutter that fatigues the instep.

Technical features

The structure, studied to this new version of the blade basis material, pretends to combine a great solidity with a good water channeling, a protection on the side nerves and a soft forefoot to obtain a comfortable flutter and less erosion due to accidental contact with the sea floor. Furthermore, it uses several technologies common to all other Cressi models:

• “Foot pocket-under-blade design”: The blade arises from the superior part of the foot pocket, linking solidly the fin to the foot and transmitting all the generated effort while flapping without energy loss through soft areas. This version allows channeling the water from the ankle to the blade’s end, which is different from traditional models, in which the foot pocket doesn’t help to improve. Besides improving the flapping direction, this design provides features between 10% and 15% higher than other similar models on the market.

• Decreasing blade side thickness to improve the flapping direction and achieve a greater inertia from fin’s end.

• Reinforced foot pocket on the superior area through an extra thickness and on the sides through two extensions in polypropylene from the blade to avoid the energy dispersion in the process of transmission from the foot to the blade.

• 360º fast adjustment tilting buckles. They allow the ideal automatic strap positioning during the flapping. A brand new buckle blocking system makes impossible the usual accidental female part release.

EBS ELASTIC STRAP SYSTEM +Info

It combines new buckles of an essential and hydrodynamic design, adjustable to all Cressi models, with a brand new adjustable strap made of highly elastic pure latex. The latex is the most elastic material from nature and has the quality to extend until 8 times its own length without breaking and with complete elastic memory, that is to say, recovering its initial length. This on the fin’s strap gives us great advantages:

• Allows a relationship between comfort of placement and fin’s fixing, over systems with springs, exactly because of its high elastic coefficient (X8 vs. X1.5 of the spring).

• It eliminates the messy need of adjustment that traditional buckles have, a process that not always guarantees a perfect heel fixing, especially with non-experienced divers or stress situations during the equipping process.

• It allows, maintaining the flapping comfort, a high pressure level over the heel which is essential to obtain a right energy transmission applied to the fin without energy loss because of the “spring effect”. This is certainly its most significant feature because a strap excessively soft, long or without elastic memory reduces drastically the fin’s efficiency.

• It’s easily replaceable and essential both conceptually and in its production and assembly.

• The natural latex used is of greatest quality without burdens to affect on its features and it guarantees a high resistance to usage, saltpeter and sun exposure.

Colors: black-grey, blue-light grey.
Sizes: XS-S, S-M, M-L, L-XL