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About Mares Avanti X3 Open Heel Fins

The Mares Avanti X3 is the perfect combination of comfort and power for recreational divers and snorkeler's. The mid-sized blade has three channels for optimal movement. The fin blade is made of Tecraclene: blade with three channels for optimizing water flow, the center channel is inverted to make better use of the glide stroke. The upper and lower stabilizers help maximize muscle energy conversion.

Tecraclene ribs in the foot pocket afford an improved fit and permit more efficient transmission of the kicking action. The range of sizes is complete, from XS to XL size to better accommodate all requirements, including those of women and younger divers. The straps feature the ABS Plus (Adjustable Binding System) for single-handed adjustment. The Mares Avanti X3 is a successful marriage of comfort and power.

The Avanti X3 uses Mares patented design ABS Plus Buckles. It only takes one quick movement to easily open or close these buckles, even when wearing thick neoprene gloves. The double button release prevents the buckles from accidentally opening making them the most user friendly system on the market.

Fin comes in three colors and four sizes, has an overall length between 22.2" to 26.4" (56.5 to 67 cm) depending on size. Fins are made from Tecralene; weigh between 2.8 lbs to 4.6 lbs (1.28 kg to 2.08 kg) and come with a 24 month limited warranty.

The Mares Avanti X3 Open Heel Fins is commonly used for Recreation, SCUBA, Snorkeling, Travel and more. The Mares Avanti X3 Open Heel Fins is most used by customers who consider themselves to be a Advanced, Advanced Diver, Beginner, Casual/ Recreational, Novice Diver, Professional, Recreational Diver among others. The Mares Avanti X3 Open Heel Fins is popular because customers like the following qualities of the Mares Avanti X3 Open Heel Fins: Accommodates Boots, Comfortable, Efficient, Lightweight.

Warranty Information

This product has a limited warranty of 24 months.

Mares Avanti X3 Open Heel Fins Features

  • Three Channels for Super-Channel Effect
  • Manufactured in Tecralene for Superior Performance
  • Orthopedic Foot Pocket
  • Rugged, Durable Construction
  • Foot Pocket Adds Thrust with Less Fatigue
  • ABS Plus Buckles
  • 3 Colors and 4 Sizes
  • 2 Year Limited Warranty

Mares Avanti X3 Open Heel Fins Customer Reviews Powered by TurnTo®

Review Summary


(based on 56 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 1 Stars



Most Liked Positive Review


Best I've used

I've owned a number of fins, including similar full blade, split and hingled but this is the fin I like best. Decided to try it after watching videos of sidemount divers using the same brand, next grade up. Sidemount divers tend to be cave divers and need power and efficiency. I really like the power of the fin, I trim well with it, and it is an excellent fit to my Henderson 5 mil boots. I have a 8.5 shoe size (male) and got the recommended size, small. The buckle system works fine in th...

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Most Liked Negative Review


Mares Avanti X3


Reviewed by 56 customers

Displaying reviews 1-5

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Has no locks on straps


from Fremont, CA, US

Came off while diving as the release hit kelp while abalone diving . Nearly lost fin. Not recommended for California diving. Get the fins with locks.


Mares Avanti X3 open heel fins


These fins are perfect for scuba with boots. They can also be used for snorkeling. The sizing is just about right on. They are comfortable and pretty efficient. They bend just enough to not give leg or foot cramps.


Size chart is not correct


Do not order items as a gift as the return clock starts ticking the minute your order is sent!! Ordered these fins end of Oct for my wife for Christmas. Finally started dive lessons in March. She tried them on and they dwarfed her foot! Contacted LP to return the brand new fins for an exchange-They said NO even though they still sell the fins-Store Policy-Seems like a great way to convince me to order again--My policy--Don't order product from people who don't put the customer first.


Made to last, comfortable to use.


As promised, something that has performed well beyond expectations. Initially I trusted the dive shop employee who sold my first and only set of fins. They were bought in at a shop in Jacksonville. The cost was about $125, although a quick search on LeisurePro list them for way less. They were purchased right before doing the PADI Rescue course. Approximately 12 years later and over 5000 dives they are still going strong. Now that's value, and no warranty required. There is a Mares dealer here in West-End who sells these and newer versions of the fins but the only thing that has been replaced is the straps. When the weather gets nasty on the north side we dive the south. At times we do shore dive in Flowers Bay over by Church Wall. That's when the open heel fins earn their money. To clarify, we carry a large variety of closed heel fins, some of which are never picked because they are simply to hard to put on and much less take off while hanging to the back of the ladder. I've tried the split fins and they definitely have less resistance and thus less stress on your knees. I'd hate to have to tow someone back to the boat against a current using split fins however. I'm just making the case that the Mares Open Heel fins are good and reliable. On a separate note, we have used a variety of close heel fins for just about all our rentals when boat diving. During that time, it is also the Mares closed heel fins which have lasted the test of time. They get the double oks from this reviewer. That's not to say I'm not going to try a different pair. Until next time, happy bubbles.




I love these fins, even though I ordered them at least a half-size too big, (so I wear socks in my booties and they fit fine). My fault. My Dive Master/Instructor had a set of these and of all the fins I tried, I liked these the best, so I bought a set. They are the perfect balance and combination of performance and comfort. The fact that they look fantastic is just icing on the cake. (I have the yellow color). I ordered these with several other items and all were delivered EARLY, and packaged very well. Always a fantastic buying experience, and great people, thank you Leisure Pro!

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Questions & Answers Powered by TurnTo®

Questions about this item:

Shopper  Why Did You Choose This?
Bill W  Price and other reviews
KATHY B  I had these fins in the past and loved them. They move a lot of water and are great in current. They do take some getting use to when you change from a split to the Mares Avanti though. Great fin.
WILLIAM F  Great Fins great price
JOHNNY J  Mares makes the best scuba fins, period. My Tusas were good, but too tight for my wide feet. Mares sucks for some products, such as SMB's, Regs, etc, but they are the best for fins.
Leow W  Hi, got a mares avanti fins size regular, but a bit too for me, anyway to get a proper fir?? get a thick boots?
BRIAN M  Thick dive booties might be sufficient to make the boots fit, depending on how off the fit is. I can't judge that, or recommend how many sizes you can hope to adjust via different booties. Sorry.
Shopper  Are Bungy heel straps an option?
KEVIN F  You can add the bungee strap for an additional purchase.
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