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JBL Polymer Open Heel Fins Long Blade
JBL Longblade Polymer Fins deliver outstanding performance at an unbeatable price. Dive deeper and stay there longer. These fins feature a best in class all new polymer blade. Much like our flagship Xcelerator Blade, they have a stiff foot base that becomes progressively flexible towards the tip. The reinforced base adds further rigidity to critical areas. This balance of stiffness and flex ensures that each kick translates to maximum thrust. These superior qualities are the result of an exclusive polymer blend of nylon and carbon fiber. Polymer blades are set at a 22 degree angle, following the natural geometry of the foot and leg. JBL open heel foot pockets allow for a custom fit without skimping on comfort or kick efficiency. This accomplishment is achieved by molding them from three different rubber densities. The unique properties of each material enable peak performance throughout the pocket. Adjustable back straps ensure the perfect fit for every foot. Side rails offer additional stiffness and channel water down the blade. Water that would “spill” over the edges is converted into further propulsion. Pockets and blades are modular. Secured with screw and blade clips this allows for smaller storage, easy repairs, and upgrades.
Weight 4.7 lbs
Dimensions 36 x 8.5 x 4 in
| Product Category | Fins |
| SKU | JBL-503XX |
| Condition | New |
| Brand | |
| Sizing | Medium: Mens US 8-9
Large: Mens US 10-11
X-Large: Mens US 12-13
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If you have a normal to wide foot I would go with the Large in you have a narrow foot then the Medium would fit better.
Hi Bill, thank you for your question on the JBL Polymer Open Heel Fins long Blade. If you have a thinner boot you should be able to wear them but go up a fin size. Let us know if you have anymore questions.
Hi Bill, thank you for your question on the JBL Polymer Open Heel Fins Long Blade. The fin is stiff towards the foot pocket but towards the tip of the fin it is more flexible.
Hi David, These are made to fit with a dive boot, .. the size chart shows Large: fits Mens US 10-11 with a standard dive boot. If your boot is heavy duty with a tennis shoe type of sole you may want to go up to an X-large.
By Joshua Wisham on July 13, 2019 Verified Buyer
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By GARY BEAUCHAMP on July 27, 2019 Verified Buyer
Great fins for the money!!
By MattFromRI on August 28, 2019
These are awesome. Worth the money. Don’t buy online, trying them on is essential. Buy from a local shop where you can learn about them and get the exact fit....You don’t need the safety straps or boots(but buy wet socks online).