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Olu 120 Snorkeling Observation Buoy
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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San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

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.
Anti-fogging
The 2-chamber design of the product prevents condensation from forming.
Versatility
Use the side clips to attach the OLU buoys to one another for even more fun!
Product Customer Reviews

The kids love it! They can snorkel...without a snorkel. Great quality too, no issues so far.
Quality Product
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.
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.
Good For new use
Dear Richard,
We really appreciate your time in rating our product, OLU 120 snorkelling observation buoy blue. We will share with the team to let them know to keep up the good work. Thank you once again for your time on reviewing our product and we hope to serve you again soon!
Don't hesitate to contact us at 03-23800363 if you have any inquiries. Thank you again for your time in leaving us constructive feedback to help keep improving our product for everyone. Keep your loyalty to Decathlon, we hope to see you again soon!
Nurul Aisyah
Watersport Advisor🌊
Decathlon Mytown
My kids absolutely love this item! It’s very cool and remarkably useful!
Good for relaxing in the pool
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.
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,
Fabrice
Omni Channel Advisor
Diving | Snorkelling
เห็นโลกใต้น้ำได้โดยไม่ต้องเอาหน้าจุ่ม
สวัสดีค่ะ คุณณภัสชนก
ขอขอบคุณสำหรับการรีวิวค่ะ
ขอให้คุณลูกค้ามีความสุขกับการออกกำลังกายและมีสุขภาพร่างกายที่เเข็งเเรงค่ะ
Pimpila K
เห็นใต้น้ำได้ ชอบๆ
สวัสดีค่ะ คุณณภัสชนก
ขอขอบคุณสำหรับการรีวิวค่ะ
ขอให้คุณลูกค้ามีความสุขกับการออกกำลังกายและมีสุขภาพร่างกายที่เเข็งเเรงค่ะ
Pimpila K
มองเห็นชัดเจนพกพาสะดวกใช้งานง่าย
สวัสดีค่ะ
ขอขอบคุณสำหรับการรีวิวค่ะ
ขอให้คุณลูกค้ามีความสุขกับการออกกำลังกายและมีสุขภาพร่างกายที่เเข็งแรงค่ะ
Pimpila K
เคยซื้อให้คุณยายใช้เพราะว่ายน้ำไม่เป็น เอาไว้ส่องดูปะการังผ่านตรงใสๆ เวิร์กดีค่ะ
สวัสดีค่ะ
ขอขอบคุณสำหรับการรีวิวค่ะ
ขอให้คุณลูกค้ามีความสุขกับการออกกำลังกายและมีสุขภาพร่างกายที่เเข็งแรงค่ะ
Pimpila K
สีสันสดใส ใช้งานได้ทั้งเด็กและ ผู้ใหญ่
สวัสดีค่ะ คุณ Natthapong
ขอขอบคุณสำหรับการรีวิวค่ะ
ขอให้คุณลูกค้ามีความสุขกับการออกกำลังกายและมีสุขภาพร่างกายที่เเข็งแรงค่ะ
Pimpila K
ใช้งานง่าย เห็นใต้ทะเลชัดดี
สวัสดีค่ะ คุณ Natthapong
ขอขอบคุณสำหรับการรีวิวค่ะ
ขอให้คุณลูกค้ามีความสุขกับการออกกำลังกายและมีสุขภาพร่างกายที่เเข็งแรงค่ะ
Pimpila K
มองเห็นใต้น้ำในระดับนึงไม่ถึงกับชัดมาก
สวัสดีค่ะ คุณ Rome
ขอขอบคุณสำหรับการรีวิวค่ะ
ขอให้คุณลูกค้ามีความสุขกับการออกกำลังกายและมีสุขภาพร่างกายที่เเข็งแรงค่ะ
Pimpila K
Additional Product Information
Composition
Main fabric: 100.0% Polyvinyl chloride
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 lbsSize M: For a weight between 90 and 145 lbsSize 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.
Storage instructions
In a dry place away from light.
Origin
Imported
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
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Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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lowers overhead and indirect costs

Olu 120 Snorkeling Observation Buoy
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
