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Adult Snorkel SNK 520

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Sale price: $9.99 Regular price:

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Model: 8491471

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Product Features

A photo of the Adult Snorkel SNK 520 in use

Adult Snorkel SNK 520 is designed for adult snorkelers for moderate-intensity SNORKELLING.

Easily expel water through the valve of our 520 snorkel!

Water drainage system

The snorkel purge valve facilitates water expulsion and minimizes leftover water


The dry-top prevents water from entering from top of snorkel while free-diving.

Mouth comfort

Orthodontic silicone mouthpiece for maximum comfort.

Anatomical design

Flexible tip for better positioning on the face and in the mouth.

Easy breathing

The snorkel's volume is adapted to the adult user's morphology.

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Adult Snorkel SNK 520,pale mint

Product Customer Reviews

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Adult Snorkel SNK 520,pale mint
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snorkel ใช้สะดวก

ซิลิโคน ตรงที่กัดนิ่มดี และ น้ำไม่ค่อยเข้าตอนดำน้ำตื้นค่ะ เพราะมีโค้งตรงปลาย ราคาถูก

Great snorkel! But..

I have been very satisfied, good quality snorkel. Haven’t yet used during the wavy water. Works perfectly on the calm open water. Only issue is, does not have any ring/ hook to attach a mask. Had to go to a dive shop to buy a rubber dibble o ring in order to fix it on my mask. Such a simple thing but a major blow! Would have given 5 starts otherwise..

Hello Vladimir,

Thank you for supporting Decathlon Hong Kong and your feedback on your experience with our product.

We sincerely appreciate your insight because it helps us build a better product offer.

*The rubber dibble o ring will be arrive on the middle of MAY.*

If you have any more questions, comments, or concerns or compliments, please feel welcome to reach back out as we would be more than happy to share and assist.

Stay healthy and safe dive!


Eric Cheung 

Decathlon Hong Kong Diving Team

King chun


Used for snorkeling.

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No hook !!

Very good product but what a shame to not having thinking about a way to attach it to the mask... maybe decathlon designers are diving without mask

Hello M,

Thank very much for your feedback. 

I'm really happy that you like the features of your SUBEA Snorkel SNK 520. 

Regarding the clip to attach it to the mask, as the description says, this is a snorkeling snorkel. 

If you use use it with our snorkeling masks you don't need a clip because the mask strap has a loop to pass the snorkel through.

If you use it with our diving masks or other brand masks, then we sell the clip separately (we are currently out of stock because the new model is coming soon).

We also have a diving snorkel that comes with a clip to attach it to the diving mask because at Decathlon we think that it's more convenient to dive with a mask

Leaking valve and taking water with the wave

I bought 4 pieces of this snorkel to replace the cheaper SNK 500 for my family snorkeling holiday this year. Turns out it is a disaster. The expel valve at the bottom keep leaking. When we blow the water out, the shape of the valve sometimes got wrinkled/flipped and letting the outside water coming back. We need to keep fixing it in between the snorkeling. The snorkel also cannot stand wave more than 20-30 cm since it does not have splash guard

Hello Dedhi,

Thank you very much for your feedback.

I am sincerely sorry that you and family didn't enjoy your snorkels during your holiday trip.

The valve of the FRD 100 snorkel has been tested and approved by our design team and I tried it myself with no issue.

I believe that your snorkels have a factory defect and if you don't mind bringing them back to our store we will exchange them.

The orange part on the top of the snorkel is the splash guard, I will also update the development team that its design has to be improved.

All your feedback will be considered to upgrade our products and give you the best underwater experience.

We hope to see you soon in our stores.

Have a nice day.

Make bubbles & smile

Fabrice, Omnichannel Sport Leader: Diving | Snorkelling | Free Diving

Defect in valve

When I tried using for the first time, the one way valve near the mouth piece has leakage and water enters the snorkel tube.The item is useless for the purpose I purchased.

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Hello Sir,

Thank you for your feedback on our Snorkel 120 model. Ideally, any water in the snorkel is easily expelled through the valve- it is the winning point of this product. During snorkeling, there will always be some water that enter from the top, but you need to blow air through the mouth pieve in order to expel the water. If you are facing an issue, it is a one-off case. I welcome you to come to any Decathlon store to exchange/refund it for another snorkel or to understand the problem better with the sport leader in the store.
Kanika Nagia
Country Sport Leader | Snorkeling and Diving
Decathlon Sports India Pvt. Ltd.
Pretty good piece of kit.

The valve worked fine (they can leak if badly made), and the kids loved that when you blow through it jets the water sideways.... Good shape, comfortable mouthpiece, good visibility for the end of the tube. Good piece of kit

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Does not come with attachment to hook on mask!

We were surprised to discover that there is no bracket supplied with the Freediving Snorkel for Adults FRD120S/N: 000000749047 Consequently it can't be attached to the diving mask buckle. So we will have to come back all the way to Emeryville for refund and exchange as Decathlon SF Market St does not carry any other better snorkel (Like the 520). Bummer!

FRD120 Freesdiving snorkel for adult

1. there is no splash guard, umalon lang ng bahagya pinasok na ng tubig, ang sakit sa lalamunan ha. 2. no holder. natatngal yung tube dun sa soft clear part. hanap nalang kayo ng ibang brand na may dry top*

Good but would be better if it had a hook

For 2019 the snorkels don’t have a hook to attach to the mask strap. Yes you can slip the snorkel through the loop in the strap. But it is nowhere near secured as well as when there was a simple hook attached.

Muy buena

No entra. Agua

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Buen producto

Echo a faltar que no venga dotado de abrazadera de sujeción y que en el centro comercial no disponga de ellos.

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junto con las gafas perfecto.

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Ideal para bucear y poder sumergirte un poco, ya que tiene una membrana que evacua el agua que entra en el tubo

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No estoy acostumbrada a utilizar productos como este y creo que es mejor la máscara entera para gente como yo

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Additional Product Information


Tube (For snorkel)

  • 100% Polypropylene

Deflector (For snorkel)

  • 100% Polycarbonate

Snorkel mouth piece

  • 50% Silicone
  • 50% Polycarbonate

Tube connector (For snorkel)

  • 100% Silicone


When Snorkeling, water can enter the snorkel due to immersion or splashing. The valve located at the bottom of the snorkel makes it easier to expel water. Thanks to the valve, most of the water is drained from the bottom, which means the user does not have to blow out so hard. This is unlike a conventional snorkel where the water is drained from the top.

How to use the valve

Simply blow out gently to empty the snorkel through the valve. After breathing out, be careful when you breathe back in. Inhale slowly as some residual water can remain in the snorkel. If in doubt, do not panic; raise your head out of the water and the snorkel will empty itself instantly through the valve. High-speed intensive swimming is not recommended as it can move the valve and cause water to enter.

Valve maintenance

Sometimes sand or salt gets stuck between the valve and the hard part of the snorkel, this prevents the valve from correctly lying flat and ensuring a watertight seal. In this case, simply rinse the snorkel thoroughly with clean water and check that the valve lays flat.

Breathe easily

With its comfortable mouthpiece and the correct size of the snorkel, you can breathe safely.


Silicone is an extremely flexible material. The silicone mouthpiece provides increased mouth comfort.


This product contains no PVC.


The mouthpiece is the part of the snorkel that is placed in the mouth. Its specially designed shape makes it one of the most comfortable snorkels for your mouth.

Wave guard

The deflector is the part located at the top of the snorkel. Its curved shape creates a protection limiting the inflow of water through the top of the snorkel.


Snorkel certified compliant with safety requirements according to European EN 1972 standards. Certified by the INPP (French professional diving institute).

Dimensions of the snorkel

Length: 15.7" Thickness: 1.2".

Weight of the snorkel

4.2 oz.

What is the difference between freediving and snorkeling?

At Subea, the Decathlon diving brand, we decided on a simple way to define the difference between our freediving and snorkeling products: From the moment you hold your breath and swim under the surface of the water even a few meters, it is freediving. Conversely, if one stays on the surface, this is snorkeling.

What is the subea brand?

Tribord Diving is now called SUBEA, the Decathlon brand dedicated to underwater sports (snorkeling, scuba diving, spearfishing and free-diving). The markings on all our diving products will gradually be replaced. Why SUBEA? Because: "SUBaquatic Experiences are Amazing"! For more information:



Storage instructions

We advise you to store the snorkel in a dry place away from direct light.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual