PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass
PRO Monofin 4X Fiberglass

PRO Monofin 4X Fiberglass


The next generation in our record-breaking monofin line.
Regular price$935.00
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Shipping calculated at checkout.

Size chart

Standard Molchanovs Hand-Built Foot Pocket Sizing

Please note: If you have a noticeable size difference between each foot, wider feet, or especially high or low arches, we suggest ordering custom foot pockets. Follow the ‘Custom Hand-Built Foot Pocket Measurement Guide’ guide below to measure your feet correctly.

Custom Hand-Built Foot Pocket Measurement Guide



Custom Foot Pocket Fit Guide
The desired fit determines the tightness of the foot pockets. Three options are available:

Comfortable: Allows more space inside of the foot pockets for the feet. The feet will feel like they are on the verge of movement, but will not actually have movement since any friction between the feet and foot pockets will cause blisters. Comfortable for about 2 hours of wear.

Normal: More comfortable compared to the Tight fit. There is slightly more space inside for the feet, but not enough space for extra movement. Allows for about 20 - 50 minutes of wear.

Tight: Specifically designed for performance, which means that the fit is especially tight. This gives you the best control over the blade as the feet are very compressed with no space for any extra movement inside of the foot pocket. Suitable for about 10 - 30 minutes of wear.

Please note: The maximum time a freediver can wear foot pockets (especially Tight fit) depends on their level of experience and how flexible their feet are. If you would like to improve your foot flexibility, watch this video.


Choosing Monofin Blade Stiffness
Blade stiffness depends on your height, weight, technique, experience, training goals, and blade size. Below are general tips on how to choose the right stiffness. If you are not sure, e-mail info@molchanovs.com with a video attached of one of your dives for a recommendation.

Soft: Suitable for smaller and lighter freedivers, and also for experienced freedivers with excellent ankle-driven technique. Softer blades are more economic in terms of energy consumption, although it mostly remains a preference among freedivers with more strength whether to choose a soft or medium stiffness.

Medium: Suitable for larger and heavier freedivers, freedivers with more lower-body strength, or for freedivers who needs more power.


Choosing Monofin Blade Size
We also offer the choice of a Small monofin blade for freedivers who are under 65kg (143lb), shorter than 170cm (5 feet 6 inches), or with shorter leg proportions. Small blades are 2cm (0.8in) shorter than Regular blades in length and width, and are particularly ideal for shorter freedivers because of their ease of maneuverability while additionally requiring less power and energy spent on kicks. While the blade-layering structure of both Small and Regular blades are the same, the reduced surface area of the Small blade can make them feel softer than Regular blades.

If you are on the smaller and lighter side (or if you prefer a more agile monofin), choose a Small blade. If you are on the taller or heavier side (or if you prefer a more powerful monofin), choose a Regular blade.

Choosing Foot Pocket Angle
The standard 30° foot pocket angle will emphasize the back kick. If you have very flexible ankles, we recommend you choose a 25° foot pocket angle to balance the load between the ankles and hips. For stiffer, less flexible ankles, choose a 35° angle.

GUIDES

If you’re feeling overwhelmed by the options and fin models and aren’t sure where to start, start by checking out the articles below.

Monofins

How to Choose the Best Monofin for Freediving
Why Every Freediver Needs a Silicone Monofin

Foot Pockets

Molchanovs Hand-Built Foot Pockets: Standard Size or Custom Size?

Care and Travel

How to Take Care of Your Freediving Bifins and Monofin
How to Travel with Your Freediving Bifins and Monofin

Tailor your monofin specifically to your build, strength, and diving technique with the PRO Monofin 4X Fiberglass–our most customizable fiberglass monofin. Customization options include blade and accent color, blade size, blade stiffness, and the choice between standard-sized or customized foot pocket size, fit, and angle. Featuring an updated blade and foot pocket design.

Comfortable hand-built foot pockets
Now with a matte and glossy finish, the foot pockets contain inside lining and arch support. An optimized fiberglass insert placed inside the foot pocket results in a ‘spring-like’ effect, giving you more distance with each kick and a better transition of energy from your feet to the blade.

Premium 100% UHC fiberglass
The durable fiberglass blade is designed for low-effort + high-propulsion finning and continues to be in the top-performance range for both fiberglass and carbon blades. The blade-layering structure has also been updated to support a low-effort, almost straight-leg ankle-driven technique by keeping the load on the ankles.

Adjustable foot pocket angle
While the standard foot pocket angle is 30°, you have options–tailor your monofin even further to your body depending on your ankle flexibility! You can choose 25° for very flexible ankles or 35° if you have limited flexibility.

New double-sided blade design
The captivating new blade design features double-lined blade accents, now on both ends of the blade, with a smoothed-out silhouette and ‘molchanovs’ written on the back of the blade.

If you’re a professional athlete participating in the World Championships and prefer a medium or hard blade to a soft one, we can offer you additional adjustments for foot pockets. Email us at info@molchanovs.com.

Important note: All of our fins are handcrafted to adjust the shape and stiffness of the blade and to ensure the most effective connection between the foot pocket and the blade. As such, some cosmetic imperfections may be visible. This does not influence blade integrity or performance but simply makes your fin unique.

◦ Materials: 100% UHC fiberglass
◦ Handcrafted from start to finish
◦ Hand-layered blades for superb response and feel
◦ Choose between a ‘Small’ and ‘Regular’ blade size according to your build
◦ Molchanovs Hand-Built Foot Pockets:

  • Heavy-duty, wear-resistant, and UV-resistant
  • Custom open-heel foot pockets for flexibility
  • Comfort Lining interior with soft micropore for maximized comfort
  • Increased toe space for added relief
  • Engraved Molchanovs logo on the front
  • Choose between standard EU sizes or custom sizes with supinator support and choice of fit

◦ Blade Stiffnesses: Soft, Medium
◦ Foot Pocket Angle: 30° standard angle

  • Can be customized to 25° and 35°

◦ Total Length (depending on foot pocket size):

  • ‘Small’ Blade: 70 - 72cm (27.6 - 28.3in)
  • ‘Regular’ Blade: 72 - 74cm (28.3 - 29.1in)

◦ Blade Width:

  • ‘Small’ Blade: 68cm (26.8in)
  • ‘Regular’ Blade: 70cm (27.6in)

◦ Weight: 2.6kg (5.7lb)

Care Instructions

All equipment should be rinsed in fresh water after use and placed out of direct sunlight and heat. Do not place heavy objects on top of the monofin. For more information, see how to care for your freediving bifins and monofin here. Additionally, see how to travel with your bifins and monofin here.

Warranty Policy

A 1-year limited warranty applies. Please note that defects or damage to the equipment caused by improper or incorrect use or insufficient/improper maintenance and product care will render our Warranty Policy null and void.

Standard Molchanovs Hand-Built Foot Pocket Sizing

Please note: If you have a noticeable size difference between each foot, wider feet, or especially high or low arches, we suggest ordering custom foot pockets. Follow the ‘Custom Hand-Built Foot Pocket Measurement Guide’ guide below to measure your feet correctly.

Custom Hand-Built Foot Pocket Measurement Guide



Custom Foot Pocket Fit Guide
The desired fit determines the tightness of the foot pockets. Three options are available:

Comfortable: Allows more space inside of the foot pockets for the feet. The feet will feel like they are on the verge of movement, but will not actually have movement since any friction between the feet and foot pockets will cause blisters. Comfortable for about 2 hours of wear.

Normal: More comfortable compared to the Tight fit. There is slightly more space inside for the feet, but not enough space for extra movement. Allows for about 20 - 50 minutes of wear.

Tight: Specifically designed for performance, which means that the fit is especially tight. This gives you the best control over the blade as the feet are very compressed with no space for any extra movement inside of the foot pocket. Suitable for about 10 - 30 minutes of wear.

Please note: The maximum time a freediver can wear foot pockets (especially Tight fit) depends on their level of experience and how flexible their feet are. If you would like to improve your foot flexibility, watch this video.


Choosing Monofin Blade Stiffness
Blade stiffness depends on your height, weight, technique, experience, training goals, and blade size. Below are general tips on how to choose the right stiffness. If you are not sure, e-mail info@molchanovs.com with a video attached of one of your dives for a recommendation.

Soft: Suitable for smaller and lighter freedivers, and also for experienced freedivers with excellent ankle-driven technique. Softer blades are more economic in terms of energy consumption, although it mostly remains a preference among freedivers with more strength whether to choose a soft or medium stiffness.

Medium: Suitable for larger and heavier freedivers, freedivers with more lower-body strength, or for freedivers who needs more power.


Choosing Monofin Blade Size
We also offer the choice of a Small monofin blade for freedivers who are under 65kg (143lb), shorter than 170cm (5 feet 6 inches), or with shorter leg proportions. Small blades are 2cm (0.8in) shorter than Regular blades in length and width, and are particularly ideal for shorter freedivers because of their ease of maneuverability while additionally requiring less power and energy spent on kicks. While the blade-layering structure of both Small and Regular blades are the same, the reduced surface area of the Small blade can make them feel softer than Regular blades.

If you are on the smaller and lighter side (or if you prefer a more agile monofin), choose a Small blade. If you are on the taller or heavier side (or if you prefer a more powerful monofin), choose a Regular blade.

Choosing Foot Pocket Angle
The standard 30° foot pocket angle will emphasize the back kick. If you have very flexible ankles, we recommend you choose a 25° foot pocket angle to balance the load between the ankles and hips. For stiffer, less flexible ankles, choose a 35° angle.

Production Times

Production time for customized bifins takes approximately 4 - 6 weeks depending on the volume of orders. If you need them sooner, write to us at info@molchanovs.com and we’ll check if we can accommodate your needs.

Shipping and Returns

See the Shipping and Returns section of the FAQ here.

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