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Have you ever dreamed of swimming through the water like Ariel from The Little Mermaid, or all her friends in the underwater paradise? Most of us probably have at one point or another. And with a mermaid tail, that is exactly what you can do.
Mermaid tails are currently experiencing growing popularity across Ireland. That is why I have decided to share some insights about mermaid tails in this guide, helping you choose the right model for yourself, your daughter, or your son.
👆 Click on each model to jump down to the section where we review each one in depth.
Best mermaid tail incl. monofin for kids (6-12 years) regardless of price 
Best mermaid tail incl. monofin for adults (12+ years) regardless of price 
Best mermaid tail incl. monofin for the price (6-14 years) 
The Fin Fun mermaid tail set for kids is the best you can get if your child is between six and twelve years old. It fits snugly around the feet, legs, and waist. It does not trap air, providing neutral buoyancy. Plus, the design is truly lovely and well-crafted.
When it comes to children using mermaid tails, safety is the absolute top priority. It simply has to be easy to get out of if an emergency arises. And because the child doesn’t have to struggle with zips, straps, or velcro to take it off, Fin Fun offers the highest possible level of safety.
This mermaid tail comes as a complete set with both a monofin and fabric tail. This works out cheaper overall than buying the parts separately. It is also available in five different colours: multicoloured, blue, green, pink, and purple.
The size is specifically tailored to fit children aged 6 to 12, giving your child the right fit and the most natural swimming experience.
“My daughter is thrilled – absolutely gorgeous fin!” – (Julia R.)
“Very pleased with the product! Size and quality were just as expected. Fantastic fun with a mermaid tail.” – (Cathrine E.)
Kuaki Mermaids is the perfect choice for children if you are also watching your budget. This Kuaki Mermaids mermaid tail set is available in 9 different colour variations, giving your child the ultimate experience of being a real mermaid, combined with high comfort and great aesthetics.
You get a product where both safety and durability have been prioritised. The design is bright and colourful with realistic scales that really stand out in the water. The set is made from a premium stretchy material (Xtra Life Lycra), ensuring a perfect fit and long lifespan, even after many hours in chlorinated or salt water. The material also features UV protection, keeping the colours vibrant in the sun.
Once you’re done using the mermaid tail, it is incredibly easy to maintain as it is machine washable at low temperatures. The fabric is breathable and quick-drying, making it practical to take on the go or to the swimming pool.
“Super happy. Great material. Very nice colours and a good fit!” – (Rob B.)
“A fun and magical product. My grandchild loves it.” – (Lixin T.)
Fin Fun is the best for kids. And the Fin Fun mermaid tail set for adults is also the best for grown-ups. It is precisely the same mermaid tail as the children’s version, just in a larger size designed for adults.
This means you get the highest level of safety on the market. A gorgeous and realistic design. The best fit. And a material composition that gives the mermaid tail neutral buoyancy, allowing you to move completely naturally.
When it needs cleaning, it is machine washable (in cold water!). Plus, it dries quickly once you get out of the water or after washing it.
Buying the mermaid tail as a set also saves you some money. That makes this Fin Fun adult mermaid tail set the best purchase you can make!
“Fantastic mermaid tail for adults! – Top quality, and we have so much fun with it!” – (Laurien J.)
“Super lovely tail, easy to put on and great to swim in” – (Sidse I.)
To complete the perfect mermaid look, Fin Fun has created various swimwear pieces that match their award-winning mermaid tails. Now the dream of looking like the characters from The Little Mermaid can finally come true.
You can buy a Fin Fun bikini top here, Fin Fun briefs here, and a Fin Fun dress here.
I guarantee your child will love being able to complete their mermaid look!
Not many years ago, I never saw anyone using mermaid tails in swimming pools in Ireland. But in the last couple of years, I’ve seen more and more children using them. And initially, I thought ‘why’? But then it hit me that it really is a genuinely cool and fun piece of kit.
And it seems I’m certainly not the only one who thinks so. Because with a mermaid tail, you can glide through the water just like the characters from The Little Mermaid, which pretty much all of us have dreamt about at some point or another.
Having tried swimming with a mermaid tail myself, there’s no doubt that I find it super fun. And the children I’ve seen using them in the pools definitely seem to have a blast too.
And at the end of the day, that’s probably what makes them so popular.
A mermaid tail with a monofin is essentially just a double flipper covered in the same material as standard swimwear. The fabric is then stitched to look just like the mermaid tail we know from The Little Mermaid.
The mermaid tail is quite wide at the bottom, allowing you to glide far through the water with just a single kick. Provided, of course, that you do it properly.
Using a mermaid tail with a monofin properly does require a basic level of swimming ability. Something most children have once they’re over six years old, provided they visit the swimming pool on a fairly regular basis.
Because it requires some swimming skills, a mermaid tail is only recommended for children aged six and above. Fundamentally, the following skills are required to swim safely with a mermaid tail:
To be safe, it is vital that an adult keeps a close eye on children whenever they are swimming with a mermaid tail. But as long as the guidelines above are followed, swimming with one is safe, fun, and worry-free.
As a general rule, mermaid tails can be used in both the bathtub and the swimming pool. The most fun is definitely in the swimming pool, where you can move around freely with it. It’s a bit harder in a bathtub.
In theory, a mermaid tail can also be used at the beach or in a lake. But I strongly recommend against doing that. The risk of accidents is simply too great. Especially at the beach, where there are waves and currents in the water.
So stick to using it either in the bathtub or in the swimming pool. That’s where you’ll get the most out of it, and it’s also the safest option.
More and more manufacturers have noticed the market for mermaid tails. But the absolute most popular ones are from Fin Fun. In 2016, 2017, 2018, and 2019, they won the prestigious international award “Parents’ Choice – Mermaid Tails”, which is testament to their high quality, great safety, and top popularity.
In addition, Fin Fun mermaid tails are also approved by the strict American organisation, The National Parenting Center.
Combined with great designs, this means that Fin Fun mermaid tails are the most popular on the market. Both in Ireland and abroad.
So what is it that makes Fin Fun win so many awards? The answer lies in their quality and safety, which is truly unrivalled compared to other mermaid tails on the market.
I’ll go into more detail below about what exactly makes them so good.
The fabric on a Fin Fun mermaid tail is incredibly light. It’s the same material used for competitive swimwear, which means it hugs the body perfectly. Plus, they are open at the bottom so air doesn’t get trapped inside the tail and force the legs up toward the surface of the water.
Specifically, Fin Fun’s lightweight material offers these beneficial features:
Being lightweight is not the only thing that makes Finfun’s material the best. The material composition also plays a huge role. It is made from a blend of premium polyester and elastane (commonly known as spandex).
The polyester ensures that the mermaid tail retains both its colour and size. And the elastane provides a great amount of flexibility, allowing you to move freely.
To be completely specific, the material composition provides the following benefits:
One thing is the material that makes up the mermaid tail itself. Another is the patented monofin you slip your feet into. Here, you won’t have to struggle with zips, straps, or velcro. You simply slip your feet right in, and they stay in place on their own.
This is something no other mermaid tails can offer. And since you simply pull your feet out of the monofin as if they were a standard pair of flippers, it makes them the safest mermaid tail on the market.
In addition, the monofin is made of high-quality neoprene, providing a great combination of lightness, flexibility, strength, and rigidity. All of which contribute to the natural and realistic swimming experience that Finfun gives you.
Now, I’ve talked quite a bit about the comfort and safety features that make Finfun the best mermaid tail. But design plays a big part too. Because when you put on a mermaid tail, you naturally want to look and swim like a real mermaid.
To cater to everyone’s unique personality, Finfun is available in five different designs: blue, purple, pink, multicoloured, and green. In addition, the mermaid tails feature a 3D design, making them look extremely realistic.
They actually look just like the mermaid tails from The Little Mermaid.
If you already have the fabric skin itself, fortunately you don’t need to buy a complete set. You can simply settle for buying the monofin separately. And here too, they are available for both children and adults, ensuring the best fit and safety.
You can find a Fin Fun monofin for adults (12 years or older) here and a Fin Fun monofin for children (6–12 years) here.
To ensure the best possible experience with a mermaid tail, the Danish Safety Technology Authority has issued five top safety tips for anyone wanting to try swimming and moving like a real mermaid. And I can fully get behind them.
A mermaid tail needs to fit snugly, especially around the feet. This often leads to questions about the best way to put on a mermaid tail. But it is actually nowhere near as difficult as you might think.
Your feet will be virtually locked into the monofin. This means you will need to swim by moving your legs up and down together.
When choosing the right size mermaid tail, it’s all about measuring three different areas on the body. Your shoe size is completely irrelevant here. Instead, it is your measurements around the waist, hips, and from waist to floor that determine which size you should choose.
To make it easy to get an overview of which size to choose, I have taken the liberty of borrowing the size guide below from Watery:
| Kids | Waist | Hips | Waist to floor |
| Small (6 years) 110–122 | 56–58.5 cm | 61–66 cm | 58.5–67.5 cm |
| Medium (8 years) 122–134 | 58.5–61 cm | 66–71 cm | 67.5–76 cm |
| Large (10 years) 134–143 | 61–63.5 cm | 71–76 cm | 76–85 cm |
| X-Large (11 years) 143–152 | 63.5–66 cm | 76–81.5 cm | 85–94 cm |
Simply choose the size that is closest to your child’s body measurements. That will give them the absolute best experience in the water.
Swimming with a mermaid tail is not quite like regular swimming. Both of your legs are enclosed inside the tail, so you cannot, for example, use your legs for breaststroke. You can’t really swim front crawl with a mermaid tail either.
The way you swim with a mermaid tail is by doing the so-called butterfly kick (also known as a dolphin kick or mermaid kick). In short, it involves kicking with both legs, in the same direction, at the same time.
It is a really good idea to practice the mermaid kick before putting on the mermaid tail. And here is how you do it:
When you are ready to try swimming with your mermaid tail for the first time, I recommend following the steps below:
A mermaid tail is not a cheap piece of swimming gear. Therefore, I imagine you would like it to last for as long as possible. If you follow my three tips below, you will have certainly done your part to ensure you can enjoy your mermaid tail for many years to come.
Avoid jumping around in your mermaid tail or monofin. Also, avoid rubbing the fabric against rough and hard surfaces such as rocks, stones or rough pool edges. This will damage the fabric quite quickly.
To remove bacteria, chlorine, sand or salt from your mermaid tail, remember to rinse it thoroughly with clean water after each use. This helps the colour last longer, preserves the fit, prevents unpleasant odours, and ensures the material retains its properties.
If you accidentally bend the monofin insert, it is not necessarily the end of the world. Simply remove the monofin cover and use a handheld hairdryer to heat up the bent insert. This will soften the monofin, allowing you to reshape it back to its normal form.
There are very, very few places where you can buy a mermaid tail. And even fewer places where you can get the best models from Fin Fun. But you can find them right here in the swim range at Watery.
In fact, the only mermaid tails we carry in our range are models from Fin Fun. All at very reasonable prices and in a wide selection.
If you also take a look at Trustpilot, you will see that customer satisfaction could hardly be higher. The TrustScore is top-tier, making us a safe and reliable place to shop.
That is why I recommend buying it from us at Watery if you need a mermaid tail for your children or yourself.
