Triathlete entering open water wearing a wetsuit with safety buoy, World Triathlon and USA Triathlon official partner branding

RESTUBE for Triathlon

Q: Which model is best for triathletes?

For races and training, we recommend the RESTUBE ACTIVE. It is compact and provides instant buoyancy in emergencies without affecting your swimming performance. It is also World Triathlon approved. A key advantage is that the ACTIVE can be worn both horizontally or vertically – many swimmers prefer the vertical position centered on the lower back. The integrated positioning bar prevents the pouch from slipping and keeps it securely in place while swimming. The RESTUBE BEACH, for example, can only be worn horizontally. For training especially open water training, the SWIM BUOY Classic / PRO can be another great option. It improves visibility in the water and provides buoyancy for short resets. The PRO version also includes an integrated drybag for valuables.

Push your limits and embrace the challenge of triathlon! Feel true freedom in the water – whether in training or competition, with RESTUBE you can fully concentrate on your performance.

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Bestseller

PVC-Free

Underwater view of a swimmer using the RESTUBE ACTIVE during open water swimming or triathlon training. Text overlay: “Approved for Triathlon” with logos of USA Triathlon and World Triathlon.

Nathalie Pohl and over 550.000+ other people already trust RESTUBE

ACTIVE

Smart safety backup for your triathlon

99,95 €

4.5

incl. VAT

75 N buoyancy, deployable in seconds

Designed for versatile and sporty activities in and on the water
With the innovative RESTUBE Safety System (RSS)
Official approved by World Triathlon and USA Triathlon
Your companion for many years: lightweight, robust and reusable

Perfect for the following water activities:

Color: Icemint

Description

Whether you're paddling across the lake at a leisurely pace or pushing yourself to the limit, your focus is entirely on your activity. Feel the freedom! ACTIVE is your peace of mind.

ACTIVE comes with all the standard RESTUBE Safety System features:
1. versatile use
2. small, durable and always at hand
3. also inflates with the mouth valve
4. reusable
5. release mechanism

Bringing you many other benefits and features too:

ACTIVE comes with an integrated whistle for acoustic signals
ACTIVE can be attached to the harness either vertically or horizontally
ACTIVE has a positioning bar to prevent the bag from slipping - swimmers often prefer the vertical attachment at the centre of the back
ACTIVE is compatible with all RESTUBE READY products

PVC-Free

Dry bag

SWIM BUOY

Stay visible. Train safer in open water.

29,95 €

4.8

incl. VAT

Perfect for open water swimming, snorkeling, ice swimming, and triathlon

For everyone who wants to move freely in the water – without any risk
The RESTUBE SWIM BUOY is your reliable companion for swimming, open water training, triathlon, or ice swimming
Provides extra visibility and buoyancy in emergencies, and the Pro version adds storage space for your essentials.
Ultralight, inflatable, and reusable – exactly what you need to focus on what matters most: your experience in the water

Perfect for the following water activities:

Buoy: SWIM BUOY CLASSIC

SWIM BUOY PRO SWIM BUOY CLASSIC

Description

Ready to Dive into your next adventure?

Whether it’s a lap around the lake, training for your next triathlon, or a long swim in the open sea – with the inflatable SWIM BUOY, you’re visible, protected, and free to explore.

The SWIM BUOY offers more than just buoyancy:

✔ More safety through visibility
✔ Instant buoyancy
✔ Compact & lightweight – barely noticeable
✔ Full freedom of movement in the water
✔ Oral valve – inflate the buoy with your mouth
✔ Smart add-ons available: REFLECTOR, EMERGENCY WHISTLE, PREDETERMINED BREAKING POINT, WATERPROOF LED LIGHT

And the SWIM BUOY Pro includes even more functionality:

✔ Integrated drybag – 12.5 L storage for phone, keys & more
✔ Compatible with even more smart add-ons like the READY CAM CONNECTOR, BACKPACK STRAPS, or the WATERPROOF LED SAFETY LIGHT

Accessories, Bundles & More for your Freedom

Zwei Restube CO2 Ersatzpatronen 16 Gramm

CO₂ CARTRIDGES (16g)

From 11,99 €

DRYBAG

Waterproof drybag with shoulder strap

From 14,99 €

BuddySwim SWIM GOGGLES OZEANX

For the clearest view and an unmatched swimming experience

48,90 €

SWIMMING CAP

8,99 €

WATERPROOF LED SAFETY LIGHT

9,99 €

Sold out

WATERPROOF SMARTPHONE CASE

Protective case for cell phones, 100% waterproof

24,99 €

Gear up with add-ons

60+

lives safed

2688+

five star reviews

550.000+

happy customers

For me, swimming in open water means freedom without limits. RESTUBE allows me to swim further and longer.

Loic Branda Olympic swimmer

When I was stung by a jellyfish in the open sea, I knew I needed help as soon as possible. I used the safety buoy to attract attention and luckily a fishing boat spotted me straight away.

Pia

I can swim well, but as I'm epileptic, it's important for me to have a solution in case of an emergency. That's why I always have the RESTUBE safety buoy with me in the water!

Linda

I have been using the RESTUBE Safety System for training in long-distance swimming and ice swimming since 2014. The safety buoy gives me confidence and signals to people at the shore and in the boats that I know what I am doing.

Ice swimmer Josef Köberl in a glacier lake – facing extreme cold with RESTUBE by his side, proving freedom starts with safety.

Josef Köberl Ice Swimmer

One Gear, Many Missions – RESTUBE Has Your Back

Watersports enthusiast in the ocean with RESTUBE buoy – for flotation and safety.

Safety that lets you swim faster

Maximum focus, maximum speed. Want to give your full attention to swimming? We make it possible! With RESTUBE, you enjoy extra safety and buoyancy — so you can stay focused and chase your personal best.

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Swimmer in open water with RESTUBE buoy – for flotation and peace of mind.

You set the goal, we’ve got your back

Flexibility is everything. More distance today, more speed tomorrow – sometimes with a training partner, sometimes solo. That's exactly why we developed our safety buoy and Swim Buoy. It's always by your side, compactly stored and ready when you need it.

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Prepared for Any Situation

With the RESTUBE products, you can enjoy every stroke without worrying about unexpected situations. Use the compact and lightweight Safety Buoy, which quickly provides extra buoyancy in emergencies, or tow the Swim Buoy behind you, allowing you to take a break whenever needed.

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For Adventurers Who Go Beyond the Shoreline

With the RESTUBE Safety Buoy, you experience maximum comfort. It is small and light-weight packed in its bag and can be secured to your back. This allows you to focus entirely on swimming without being restricted in your range of motion.

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Person swimming in open water with a RESTUBE ACTIVE attached to the waist during triathlon training or competition. Text overlay: “Approved for Triathlon” with logos of USA Triathlon and World Triathlon.

For training and competition

Both the Safety Buoy and Swim Buoy will keep you safe on any swimming course – whether you're training to beat your personal best or competing in a race. Our Safety Buoy and Swim Buoy ensure that you always feel safe in the water.
You can also use the RESTUBE ACTIVE in official triathlon races, as it is approved by World Triathlon, USA Triathlon and the German Triathlon Federation (DTU) for use in races and competitions.

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Be prepared to help others in need

During your swimming session, it can always happen that others get into dangerous emergency situations. With RESTUBE, you can help other swimmers and water sports enthusiasts in critical moments from a safe distance

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RESTUBE When Triathlon Gets Critical

When open water swimming, our safety buoy allows you to act quickly and don't panic. Effective help for you, your family and your friends!

Icon of a person with arms outstretched – symbolizes RESTUBE’s support when you’re exhausted or out of energy.

Fading power?

Pull the trigger for buoyancy!

a black-and-white icon with a double sided arrow in a circle, representing the critical situation in the water, when one has drifted too fas away from the shore

Far from shore?

Draw attention with the buoy!

“Cramp Support” icon – lightning bolt at the leg highlights muscle cramp risk; RESTUBE keeps you afloat in case of sudden cramps.

Got a cramp?

Take a break, relax over the buoy!

a black-and-white icon with the boat in a crcle, representing a critical situation involving boats

Boats and other people in the water?

Stay visible with the buoy, avoid collisions!

Athletes Trust RESTUBE

Nathalie Pohl

Extreme swimmer & Ocean's Seven finisher

“Despite the escort boat, you swim out there alone. RESTUBE Safety Buoy helps me keep my focus while swimming. The super small Safety System has no flow resistance and is weightless in the water. A pull on the trigger inflates the yellow Safety Buoy in seconds, which gives me an even better feeling.”

Holger Lüning

Sports scientist and swimming coach

"There are just so many factors in open water that you can't possibly anticipate every possibility. One of the reasons I still feel safe is because of my constant companion, RESTUBE."

Matheus Kozlowski

Triathlete

"Safety is important to me! During my training I rely on a small but vital product from RESTUBE in case of an emergency. I don't go into the water without my pocket-sized Safety Buoy! We wear helmets on the bike, don't we?"

RESTUBE Safety Buoy

Your Freedom in the Water Starts with Safety

FAQ about RESTUBE Buoys & Triathlon

Check out the most common questions our customers asked. Still have questions? Contact our customer support.

Three RESTUBE team members in colorful circles – your personal, knowledgeable customer service contacts.

Our customer support team is available for your questions.

All FAQs

Is the RESTUBE Safety Buoy allowed in triathlons or Ironman races?

In general, carrying inflatable buoys such as the RESTUBE Safety Buoy is allowed as long as they are not inflated. The committee of the World Triathlon has also confirmed that the RESTUBE Safety Buoy is permitted in all World Triathlon race formats.
As the official Swim Safety Buoy Partner of USA Triathlon, RESTUBE is now integrated into their safety framework – officially approved for use at USA Triathlon events.
You can find more information here: World Triathlon ; USA Triathlon

There are rescue teams in the water during races – isn’t that enough?

Rescue teams provide an important safety layer, but with hundreds of swimmers in the water at the same time they cannot always reach every individual immediately. Especially during mass starts or in more remote sections of the course, it may take several seconds until help arrives. RESTUBE bridges exactly this moment by providing immediate buoyancy until assistance reaches you.

Why would I need additional buoyancy in a triathlon?

Unexpected situations can occur even during a triathlon – cramps, cold water, exhaustion, or currents can surprise even experienced swimmers. With additional buoyancy, you are prepared for such moments. RESTUBE provides safety without affecting your swimming performance. Knowing that you have instant buoyancy available in an emergency allows you to swim more freely and with greater confidence – whether in training or competition. This helps you focus fully on your performance and push your limits without fear. In addition, RESTUBE allows you to quickly and safely assist others in the water without putting yourself at risk.

Do I have any disadvantages when wearing the RESTUBE ACTIVE during a race or open water training?

No – the RESTUBE ACTIVE is designed to be so compact that it does not create measurable drag in the water. When worn vertically on the back, it stays close to the body and does not interfere with swimming or transitions.

Which model is best for triathletes?

For races and training, we recommend the RESTUBE ACTIVE. It is compact and provides instant buoyancy in emergencies without affecting your swimming performance. It is also World Triathlon approved. A key advantage is that the ACTIVE can be worn both horizontally or vertically – many swimmers prefer the vertical position centered on the lower back. The integrated positioning bar prevents the pouch from slipping and keeps it securely in place while swimming. The RESTUBE BEACH, for example, can only be worn horizontally.

For training especially open water training, the SWIM BUOY Classic / PRO can be another great option. It improves visibility in the water and provides buoyancy for short resets. The PRO version also includes an integrated drybag for valuables.

Our customer support team is available for your questions.

All FAQs