Alchemy Aurora by Yamamoto Carbon Fiber Fins (30º) with C4 250 (Black) Pockets

Introducing the next evolution in carbon freediving fins. Created in collaboration with Yamamoto™, our new fins combine Alchemy’s precision engineering with Yamamoto’s Aurora® technology, delivering superior hydrodynamics, unrivalled build quality, and a visual transformation that captivates in the deep. Engineered with state-of-the-art materials and meticulous craftsmanship, these fins offer lightning-fast response and robust design, making them the go-to choice for freedivers who push the limits. Tested and trusted by elite athletes, they redefine the boundaries of what’s possible underwater.

Paired with black C4 250 (Black) Pockets.

Price is for a pair. Complimentary gluing service included when purchased together with pockets.

• Aurora by Yamamoto

  Introducing the next evolution in carbon freediving fins. Created in collaboration with Yamamoto™, our new fins combine Alchemy’s precision engineering with Yamamoto’s Aurora® technology, delivering superior hydrodynamics, unrivalled build quality, and a visual transformation that captivates in the deep. Engineered with state-of-the-art materials and meticulous craftsmanship, these fins offer lightning-fast response and robust design, making them the go-to choice for freedivers who push the limits. Tested and trusted by elite athletes, they redefine the boundaries of what’s possible underwater.

  Yamamoto’s Aurora® technology was designed to inject light and color into a world often dimmed by negativity. Its unique, color-shifting properties come to life both above and below the water, transforming every dive into a vibrant, immersive experience. Aurora® fins create a stunning visual effect in underwater content, making freedivers look and feel extraordinary and ensuring they stand out effortlessly. When combined with an Aurora® wetsuit, the result is a captivating, otherworldly display that’s impossible to overlook - a truly unique and mesmerizing experience for both the diver and those watching.

  It all started with an idea. Yamamoto™, a powerhouse in neoprene, had created the Aurora® color technology, and we saw the potential for something more. Could this innovative technology work on fins? Could we work together on a project like this? No company had done it before, so we embarked on a journey. Materials flew back and forth between Greece and Japan as both teams navigated uncharted territory, exploring how to apply the coating directly onto the carbon fabric before the epoxy resin process. Through technology transfer, relentless experimentation and collaboration, an ambitious concept evolved into a reality. The result was a groundbreaking pair of fins that blends design excellence, innovation, and unmatched performance, redefining what’s possible in manufacturing of freediving gear.

  Aurora® fins are available at either a 23-degree or 30-degree angle. The 23-degree angle pairs with Pathos Fireblade or Cetma S-Wing foot pockets, while the 30-degree angle mounts on C4 (250, 300, 400) or Mares X-Wing foot pockets. Both options deliver reduced effort and oxygen consumption with precise hydrodynamics. The fins feature a striking Aurora® coating with a mirror finish on the front, and a matte finish on the back. Each fin includes a unique serial number embedded into its lamination, guaranteeing authenticity.

• Description

  Alchemy Aurora by Yamamoto offers the ultimate carbon layer positioning inside each blade. Fifteen (15) layers of pure 100% carbon fiber positioned in the best possible way to offer the most efficient bending profile, yet the ultimate feedback nerve and speed. Having the first ever V shaped reinforcement layer that goes beyond the blade's angle we make sure power and feedback come straight from the beginning of each kick.

  Alchemy Aurora by Yamamoto carbon freediving blades offer a new pat. pending design called Hardtip. Built in reverse order, we managed to get the blade's tip harder. This all new feature makes the most out of your blade's efficiency as it corrects the total bending profile ensuring zero dead spots during immersion from deep dives. While not taking part in the blade's total stiffness level, comes into action when fins start oscillating continuously during diver's vertical movement, ensuring continuous power transition without dead spots.

  V3 blades are manufactured ending in a dolphin tail shape (D.Tail). This shape gives the best results based on hydrodynamics studies (Rensselaer Polytechnic Institute / T. Wei) and tests made in C.F.D. software (Computational Fluid Dynamics). The dolphin tail shaped ending gives the maximum thrust with the least possible energy consumption.

• Technology

  • Manufacturing process: VRTM
  • Carbon fiber layers: 15 (fifteen)
  • Carbon fiber reinforcement axis: 14 (fourteen)
  • Carbon fiber content: ≥72%
  • Blade length before the angle: 150 mm
  • Blade length after the angle: 650 mm
  • Blade dimensions: 800x195mm
  • Blade angle: 30°
  • Max. retraction speed: 23,151 m/sec
  • Oscillation step (feedback time): 0,0688 sec

• Size Guide

  

  Size EU	Size US	Measure L (Toe to Heel)	Measue W (Sole Width)
  36/37	4/4.5	220 mm	82 mm
  38/39	5.5/6	235 mm	87 mm
  40/41	7/8	256 mm	94 mm
  41/42	8/9	268 mm	101 mm
  42/43	8.5/9.5	272 mm	105 mm
  43/44	9.5 / 10.5	287 mm	108 mm
  44/45	11/12	290 mm	110 mm
  46/47	12/13	304 mm	120 mm