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Subea Olu 120, Snorkeling Observation Buoy

Sale price: $20.00 Regular price: $24.99

The Olu 120 is DECATHLON’s latest innovation for snorkeling. It allows everyone, without putting their head under the water, to observe, talk, and share while enjoying the underwater landscapes

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Sale price: $20.00 Regular price: $24.99

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8483874

Product Videos

Product Features

A photo of the Subea Olu 120, Snorkeling Observation Buoy in use

Subea Olu 120, Snorkeling Observation Buoy | Our design teams developed this observation buoy for children and adults who want to explore the coastal seabed without putting their heads under water.

The Olu 120 is DECATHLON’s latest innovation for snorkeling. It allows everyone, without putting their head under the water, to observe, talk, and share while enjoying the underwater landscapes

Easy to use

Just climb on board the product and observe while paddling.

Field of view

Panoramic without any deformation through the large transparent bubble.


The 2-chamber design of the product prevents condensation from forming.


Use the side clips to attach the OLU buoys to one another for even more fun!

Product Lifestyle Image Gallery

Image Gallery

Subea Olu 120, Snorkeling Observation Buoy,pale mint 

Subea Olu 120, Snorkeling Observation Buoy,pale mint

Product Customer Reviews

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Subea Olu 120, Snorkeling Observation Buoy,pale mint
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Kids love it!

The kids love it! They can snorkel...without a snorkel. Great quality too, no issues so far.

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Good Product

Quality Product

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Great Product Loved It!

We bought this during our trip to Lakshadweep. This product is truly amazing. We were able to see very deep with great clarity. If you are afraid to put head inside water or someone not comfortable with snorkeling mask this is must have. Please note you require fins to propel yourself. Without fins it becomes difficult in sea. Looking forward to using this product in other travels.

OLU 120 a Gr8 product

We are a family of five, three of us are non swimmers, two can swim but are not strong swimmers. We recently went on a trip to Maldives, and after a lot of research we got 4 sets of OLU 120 for this trip. We are fully satisfied as we could snorkel and swim with turtles, sharks and colourful fishes in Indian Ocean only because we had OLU 120. My younger daughter is 8 years, and i found the experience of snorkeling with my daughter perfectly safe with OLU 120.

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Snorkeling Observation Buoy

My kids absolutely love this item! It’s very cool and remarkably useful!

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Good for relaxing in the pool

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Hello Iris,

Thank you for taking the time to write a review on our product - OLU 120 Snorkeling Observation Buoy Blue. I am glad that this product have been working well for you!

At Decathlon, our mission is to make sports accessible for the many. It is our responsibility to ensure that our products are made to satisfy our users. 

Feel free to write a review on other Decathlon products and I hope to see you in our store soon! Stay safe and healthy!

Let's Goal

Pei Kim

UHC Ambassador


Very easy to set up. Can really see the fishes and corals through it.

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Hello Jade,

It is very nice of you to leave us a feedback.

I am really happy that you enjoyed your Olu 120 and that you could be able to observe the amazing underwater world.

Hope to see you again in one of our stores, we will show you other products to discover the marine life.

Have a nice day.

Best Regards,
Omni Channel Advisor
Diving | Snorkelling

"ลูกของลูกค้าชอบมาก แต่ใช้มา 9 เดือน มีรอยรั่วที่ตะเข็บ"



คุณลูกค้าสามารถนำสินค้าที่พบปัญหาเข้ามาที่ร้านของดีแคทลอนได้ทุกสาขาเพื่อให้เจ้าหน้าที่ที่ดูสินค้านั้นช่วยเหลือ หรือ แก้ไขปัญหาที่เกิดขึ้นจากสินค้าของดีแคทลอนได้นะครับ



Jirawat (Palm)


"สินค้าไอเดียดี เหมาะสำหรับเด็กเล็ก"




Jirawat (Palm)


"ลอยน้ำได้ดีมาก ดำน้ำโดยไม่ต้องเอาหัวลงน้ำ"




Jirawat (Palm)

ดูปะการังได้สะดวก หัวไม่เปียกน้ำ

ดูปะการังได้สะดวก หัวไม่เปียกน้ำ พยุงตัวได้ดี พกได้ง่าย สะดวกดี




Jirawat (Palm)


ใช้พยุงตัวสบาย ดูใต้น้ำได้ด้วยครับ




Jirawat (Palm)

Not bad

Not bad

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Идеално средство за наблюдение от лица със слаби плавателни способности и без такива

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Благодарим Ви, за отделеното време да споделите обратната си връзка за нашия продукт!

Като спортна компания, която се стреми да направи спорта достъпен за всеки, нашата цел е винаги да предоставяме качествени и функционални продукти.

Спортни поздрави,

Екипът на Декатлон България

Jako opora

Používali jsme inkaso oporu místo desky pod dozorem a super

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Additional Product Information


Main fabric

  • 100% Polyvinyl chloride - Phtalate free

What is the olu 120 observation buoy?

The Olu 120 is a new way of snorkeling. This DECATHLON invention makes snorkeling much easier. The Olu 120 is an inflatable product that allows you to observe the seabed without putting your head underwater, while remaining supported by an inflatable structure. Snorkeling becomes more convivial: with your head out of the water, you can move, talk and chat, while still observing!

How to choose the size of your olu 120?

The OLU 120 is available in 3 sizes: Why? The users stay on the top to observe, so several sizes are necessary to be in the best position to observe, depending on each person’s size. Therefore the size depends on the user’s weight. Size S: For a weight less than 90 lbs Size M: For a weight between 90 and 145 lbs Size L: For a weight over 145 lbs

What is the point of the clips on the sides of the olu 120?

The clips on the sides can be used to attach several OLU 120 buoys side by side. Stay together, keep an eye on the kids, or simply enjoy the experience together, thanks to this small, easy-to-use accessory!

Why is the olu 120 inflated in 2 steps?

The OLU 120 is inflated in 2 steps for 2 reasons: - first, to limit the formation of condensation. This is where the OLU 120 is innovative, because it has an air circuit that prevents condensation from forming when being inflated. - second, for your safety. If one of the chambers is accidentally punctured, the second one is still there to support you. The large black valve at the rear is used for quick and easy deflation.

How to make the most of the olu 120?

The Olu 120 is covered with a transparent film that offers a clear view, without deformation. To make the most of it for longer, take good care of it! Avoid anything that could scratch or cloud the film, like sand, stones, sunblock or other abrasive or greasy products.

What can i do if there are reflections on the olu 120?

Depending on its position, the sun may cause some slight reflections in the viewing chamber. No need to panic. Just use your hands to create some shade, and you can carry on observing.

What can i do if there are patches of condensation on the olu 120?

The air circuit prevents condensation from forming in the Olu 120, but small patches of condensation may appear on the top of the bubble, especially when getting out of the water. Don’t worry. Once back in the water, the condensation disappears. All the walls reach the temperature of the water and the condensation evaporates.

The weight of the olu 120

Size S: weight < 88 lbs - 15.2 oz. Size M: 90 lbs < weight < 145 lbs - 1.1 lbs. Size L: 145 lbs < weight - 1.3 lbs.

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 yards, 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

In a dry place away from 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.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual