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Answers to most of your questions can be found right here on this page of frequently asked questions! Please read this page before sending questions to us. We update this page often to keep the information current.

General Questions

How do I buy a Monofin?

We want to keep things flexible for our customers.  

If you already have a Fin Fun Mermaid tail, you can order the monofin in the size you need right here.  

If you'd like to purchase a new tail and a monofin at the same time, choose your color and size here, and add a monofin on the same page!  

Keep in mind, you can still buy a floppy, free flowing mermaid tail all by itself, too.  Note:  Our cute little toddler tails are not made for monofins!

Are monofins and mermaid tails just for girls?

Not at all! We have boys who love their merman tails, and our new monofins are even more popular with the male gender. You can easily and comfortably wear a monofin without a mermaid tail. In our testing, little mermaids and mermen who try out the monofin have so much fun, they don't want to take it off! Boys and girls alike love the Fin Fun Monofins and wear them to swim all over the pool. You don't have to use it just with a mermaid tail! It is fun to swim in!

Will these monofins fit any mermaid tail?

Fin Fun mermaid tails are designed to fit together perfectly with Fin Fun Monofins. Please make sure you get the right sized monofin based on the size of your tail or it may not fit properly. For tail sizes 6-10, you need a Monofin Jr. For tail sizes 12, Adult X-Small, Adult Small and Adult Medium you will need a Monofin Pro. When you buy a Mermaid Tail Set the website will automatically choose the correct Monofin for your tail size.

Mermaid tails from other makers may not fit properly. Please note: Some other makers' mermaid tails are sewn closed at the bottom. We strongly advise customers never to use a mermaid tail that is not open at the bottom. Humans, especially children, need quick access to their feet when swimming.

I'm confused about the Monofin sizing

We have created just two sizes of monofin, the Pro & Jr. We have made them to fit pretty much all sizes of feet! This is a one size fits all monofin!

The Jr is our smaller size monofin and fits our mermaid tail sizes 6 - 10.

The Pro is our larger size monofin will fits perfectly our mermaid Size 12, Adult XS (14), Adult S (16), Adult M (18-20).

monofin sizing

If you don't fit our sizes check our current size charts and scroll to the bottom to fill out a form for a custom tail. We can create your custom tail to fit the right sized monofin for you! 

What size feet do the Monofins fit?

Our innovative design means you don't need to worry about shoe size! We haven't met a man or woman our monofins didn't fit. ALL shoe sizes might need to exert some effort to get your feet through the holes, but keep trying, there is plenty of room inside. The ankle cuffs are made to fit snugly so your monofin stays put while you swim but your foot comes out easily when you want it to with just a slight tug!

Do you recommend that everyone get a monofin?

First of all, we do not recommend a monofin for young children, and do not make a monofin in a toddler size.  They need their little legs and feet free as they learn how to swim. See the picture below of a chlid wearing one of our toddler tails. They don't go past the feet, but these little mermaids still feel like the real thing!

toddler tail, no monofin

We found during our testing that the biggest factor is the child's comfort in water and their swimming ability.

Note: When a child is trying a monofin for the first time, stay in shallow water until they are comfortable with it!

Our mermaid tails, even without a monofin, have always been popular with many moms for the very fact that they did not have a monofin and are open at the bottom for easy walking. We plan to continue to sell tails without monofins to make girls and moms happy! Those who want monofins can buy them alone or with their new tail.

The wonderful thing about our mermaid tails is that we still have the advantage of an open tail but our new design holds and hides the monofin when it is inserted. If you don't want to use the monofin for a while or practice swimming without it, it is easy to simply pull it out and use the tail as you always have. Ours is unique in that it can be added or taken out at anytime, and the mermaid can use the monofin when they are ready.

So, should you choose a monofin for your child? It really depends on your childs experience in swimming more than their age. They should first learn to swim with a dolphin kick without anything on their legs or on their feet, then experience it with just the monofin, and then finally wear the tail with the monofin inserted. This can be learned very quickly and then they will be ready to have a great time, wowing everybody at the pool.

An adult needs to supervise carefully, making sure a child starts out in the shallow end of the pool. Start slow until you feel they are ready. Adult supervision is always required for safety. Click here to read our full safety precautions and recommendations. 

See our Monofin Info page for instructions on caring for and using your monofin.

* Avoid rubbing the fabric against rough surfaces, as this will damage the fabric and void the 30 day warranty.

* Avoid dragging the fin against rocks or pool floors, as this can cause the corners of the neoprene sleeve to wear through and create a hole in your mermaid tail.

* After swimming, rinse the monofin and tail with clean water to remove chlorine, salt and/or sand.

* Thoroughly dry the monofin cover before storing it! This will prolong the life of your monofin.

* Like any swimsuit material, when rubbed it will show signs of wear and/or pilling. This is normal wear and will not affect the product's functionality.