BTS Hydro 4x Carbon Blades

  BTS Hydro 4x Carbon Blades Features:  4x4 Carbon Fabric (vs. 2x2) Shark Skin Finish Concave Water Rail 81cm Length **NEW** 27 Degree Angle We are proud to announce a next level carbon fiber freedive spearfishing fin! Meet the Hydro 4x Carbon Blades. They're feather light and high performance freediving blades! 4x4 carbon fabric (vs. 2x2) to increase energy transfer. The blade length is 81 cm, which I find to be the best propulsion without sacrificing maneuverability. New 27 degree angle lines up better with the body and proves more efficient.  The 27 degree angle have better ergonomics, making kicking more natural and comfortable! The 27 degree angle blade will break the surface more easily, making surface kicking more comfortable and optimizing the power of the push through the water relative to effort. The new concave water rail is designed to displace more water per kick for better thrust. So you use less energy per kick to propel through the water faster, covering greater dista