IST Propulsion Black Rubber Fins F4


IST Propulsion Black Rubber Fins (F4)

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Free Standard Delivery
FREE Standard Delivery
30-Day Easy Returns
30-Day Easy Returns
Secure Ordering
Secure Ordering
Size Chart


Features of IST Propulsion Black Rubber Fins F4

  • The fin is deliberately made slightly shorter but no power is lost through its wider blade and the utilisation of rubber's unmatched flexibility
  • In fact, more thrust is gained by the 3 deep vents, which force water backwards, mimicking the effect of water jet
  • The fin is not only useful in the ocean but also capable of handling technical dive missions in underwater confined spaces
  • The choice of material makes Propulsion durable and long lasting
  • IST stainless steel spring fin strap compatible

Product Info for IST Propulsion Black Rubber Fins F4

F4 Propulsion represents the latest evolution of Military-style Fins from IST. Based on IST's iconic and military favorite F-1, the F4'swide blade design is slightly shorter however, there is no power shortage here. That s because of the expanded width rubber blade which incorporates unheard-of flexibility. Even more thrust is attained by 3 deep vents which force water backwards, emulating the effect of three synchronized turbo-powered water jets.

GritrOutdoors is an authorized IST dealer

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Size Chart/Specs

Size M L XL
US 5-6 7-9 10-12
Euro 36-38 39-42 43-46
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Additional Information

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