Footpocket Insoles

€35

Experience more powerful, efficient, and seamless kicks, with the brand-new anatomic insoles by C4. An absolute must for any freediver looking to maximize dive times, depth & comfort.

Insoles size
Quantity (pair)

These innovative footpocket insoles are designed & manufactured by C4, in order to make your fins more powerful, more snug, and more fun. Their anatomic shape increases comfort, minimizes air spaces, and forms left/right foot shapes, for an immersive freediving experience. They effortlessly improve the planar shape of the footpockets under the foot arch, eliminating the void, increasing the control of kicking, and optimizing the force transmission, making everything efficient, smooth, and easy. Dive more comfortably in colder waters, as the reduction of the air space inside the footpocket restricts the flow of water, thus keeping your feet warmer.

The insoles match perfectly all C4 footpockets, but can also be used with other brands, such as Mares, Pathos, Cressi, Beuchat, Seac, Omersub, Salvimar, etc. They are available in 3 sizes, fitting from size 38 to 45, thanks to the possibility of being cut to size, by using the pre-existing cutting lines.

We recommend cleaning your insoles with tap water after each use and letting them completely dry before storage.

As we want to ensure the safety and well-being of our customers, we cannot accept returns of this product for hygiene reasons. We highly recommend that you carefully review the product description and features before making your purchase to ensure that it meets your needs and expectations. We apologize for any inconvenience this may cause and thank you for your understanding. If you have any questions or concerns, please do not hesitate to contact our customer service team.

The insoles are dispatched within 48 hours, depending on stock.

FREEDIVING
100%
SPEARFISHING
90%
UW PHOTOGRAPHY
75%
RECREATIONAL
50%

Throughout the years, some of the world's deepest freedivers have used
Alchemy fins to set countless World and National records.
Here's what they had to say about us.

Sofia Tapani
Sofia Tapani
Freediver, NR Holder
"Lightweight, smoothly flexing in the water and very durable for the rough Swedish conditions I dive in. The feeling of diving is seamless, I find myself not thinking about having fins on- like an extension of my body movements. Thank you Alchemy, for making great products!"
Simona Auteri
Simona Auteri
Freediver, NR Holder
"The Alchemy V330 are not only the sleekest design out there, but they are also great for performance: in fact, I have done a World Record and 3 National Records with them! The C4-400 footpockets are super comfortable and I can use the fins for hours whilst snorkeling or on a PB dive and they work without much effort. "
Ryuzo Shinomiya
Ryuzo Shinomiya
Freediver, NR Holder, Instructor, Creator
"Alchemy blades are the same as samurai blades. A beautiful tool to which we owe our lives. Let's travel to the deep sea, to the world's oceans, and to dolphins and whales everywhere."
Robert John
Robert John
Spearo, Guide
"I need to trust my fins the same way I’d trust a dive partner to have my back. They need not to break at depth or wear me out after an 8-hour competition. Whether I’m performing fieldwork in marine biology or shore diving for pelagics, I’m running my alchemy’s."
Neza Cec
Neza Cec
Freediver, NR Holder
"The Alchemy fins transformed my diving experience! They made my dives effortless and fast, truly a game changer."
Martin Zapanta
Martin Zapanta
Freediver, NR Holder, Creator
"I’ve been using the Alchemy V330 Pro short bifins for almost four years now, they are the best short carbon fins I have ever had! The power-to-size ratio and portability of these fins are top-notch. They also fit perfectly in my luggage and are very easy to travel with."
Luca Malaguti
Luca Malaguti
Freediver, NR Holder, Instructor, Blogger, Spearo, Creator
"Alchemy's carbon stands in a category of its own. As a former engineer, I enjoy the craftsmanship and quality they put into their products. Trusting your fins at great depths and in challenging spearfishing environments is essential. They are your life support. I recommend these fins to anyone that needs a product for performance, comfort and longevity."
Linda Paganelli
Linda Paganelli
Freediver, NR Holder, Instructor
"I think I was one of the very first freedivers using Alchemy. In fact, I got my first pair in 2011 when the company had just started. 12 years later I'm still a fan, I use Alchemy both for working and training, and last year they brought me to 92 meters at the end of my deep diving season! "
John Prins
John Prins
Freediver, Instructor
"My Alchemy fins are fast and responsive, with lots of power on demand. They make light work of carrying up heavy weights from the ocean floor, with instant acceleration from the bottom. And the other day I was caught in a 3 knot current and only made it back to shore because of my fins. "
Garrett Moss
Garrett Moss
Spearo, Instructor
"Alchemy fins design and manufacture the highest-quality fins in the world. I’ve been kicking the S model fins for over 2 years. This model is the perfect tool to get me down to the deep reefs I like to hunt and back up in the most efficient way possible."
Cristian Castano Villa
Cristian Castano Villa
Freediver, NR Holder, Instructor
"In my opinion, Alchemy fins are simply the best fins you can find right now in the market. I've used them for many years in several international competitions, always with great results. The responsiveness of the blade material is phenomenal and you can use them for any underwater activity. "
Chris Funada
Chris Funada
Freediver, Spearo, Instructor
"As someone who's had the luxury of trying dozens of freediving fins, I can say with confidence that the V3-30's are by far the best fins I've ever used."
Carlos Coste
Carlos Coste
Freediver, WR & NR Holder, Instructor
"The combination of performance, comfort, efficiency, durability, and style in Alchemy fins is unmatched, and I am honored to recommend them to my students and team partners. "
Aaron Young
Aaron Young
Spearo, Guide
"A good set of fins won’t feel like you are wearing fins at all. My alchemy fins feel like a natural extension of my dive. Light and smooth, yet sharp and powerful."

Choosing the correct stiffness & footpockets for your fins can be
a cumbersome experience. Here's how to get it right.

Reforest the World
Reforest the World

We'll plant a tree for every product we sell via our eshop. A real tree, in a real planting project, in Madagascar.

SEE OUR FOREST
Sustainability
Sustainability

Do you want to learn more about our commitment to setting the highest standards of sustainability in freediving?

OUR WEBSITE IS CO2 NEUTRAL
Quality
Quality

Find out why we are commited to producing the best carbon fins in the world.

SEE HOW WE PRODUCE OUR FINS

Our products are made with the highest quality materials
and craftsmanship. Alchemy fins purchased from an
authorized retailer are fully warranted against defects in
materials and workmanship for 5 years.
See terms & conditions.