A man with RESTUBE buoy in icy water – for safety and flotation.

RESTUBE for ice swimming

Slip into icy depths with freedom. RESTUBE adds reliable buoyancy to every ice swim – for safer, bolder moments and peace of mind. So you can move through freezing water with focus and strength.

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Accessories, Bundles & More for your Freedom

Complete your cold-water kit with clever add-ons like spare CO₂ cartridges and comfortable waist belts. Our RESTUBE bundles deliver smart functionality at a great value – ideal for everyone who loves diving into icy waters on a regular basis.

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five star reviews

550.000+

happy customers

RESTUBE in ACTION: Community Voices

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

The SWIM BUOY is a must-have for my open water swimming. It has often made me visible in the lake and takes my car keys and mobile phone with me on trips. The quality is so good and the buoy is so resilient that I use a second one as a backpack. I find this buoy ingenious, well thought-out and helpful.

Stephan

At Sundschwimmen, I had to stop my swim after swallowing several times. Thanks to the mandatory use of ACTIVE, I was able to release it and wait relaxed for the rescue team. I bought two Safety Buoys for my free swim straight afterwards.

Egon

TOP! I would recommend it to anyone who swims alone in the lake or sea. My constant companion! It can save lives!

Isabela

One Gear, Many Missions – RESTUBE Has Your Back

Man standing in icy glacier water wearing a RESTUBE safety buoy around his waist, preparing for a cold-water swim.

Instant Buoyancy When You Need It

In icy water, moments matter. One pull of the trigger gives you 75 N of instant, reliable buoyancy. RESTUBE Safety Buoy brings calm, helping you stay in control when the cold hits hard. The buoy inflates in seconds — or can be pulled along inflated — keeping you above the surface and giving you space to breathe. With RESTUBE, you can embrace the ice-water experience with confidence: steady, strong, and free.

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A man in icy water with yellow RESTUBE buoy in front of glacier wall.

Full Mobility, Full Safety. Always There.

RESTUBE Safety System stays with you in icy waters without slowing you down. The compact buoy sits comfortably at your hip and practically disappears as you swim – no drag, no pressure. Its design lets you move naturally, whether you’re powering through the cold or floating at the surface. It’s uncompromising safety that still feels like pure freedom in the winter water.

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Multiple participants in a water safety drill with RESTUBE safety buoys and race buyos in a lake.

For Every Ice Adventure

Whether you’re swimming steadily through winter all season long or diving into a half-frozen lake once in a while, RESTUBE stays with you. This buoy adjusts to your needs—ready for tough sessions or quiet moments of icy bliss. Strong enough for athletes, lightweight enough for quick cold dips, and easy to bring anywhere: ocean, river, or alpine lake. With RESTUBE, you’re ready for every cold-water challenge winter brings.

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Man swimming in icy glacier water with an inflated yellow RESTUBE buoy floating beside him for safety.

For Every Challenge – Beginner to Pro

The RESTUBE Safety Buoy is your trusted guardian in icy water. Whether you’re a seasoned winter swimmer or just starting out, it’s easy to use and built for anyone who loves the water. Even lifeguards and professional trainers count on RESTUBE technology for its proven reliability. With it by your side, you’re ready for anything – from everyday training to extreme cold-water adventures.

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A swimmer with yellow RESTUBE buoy in icy water in front of a cruise ship.

Built to Last – Winter-Proof Quality

RESTUBE embodies German engineering, sustainable thinking, and uncompromising quality. Each buoy is is tested to ensure reliable performance even in brutal icy conditions. Frost-, sun-, and salt-resistant, it’s built for long-term use – not throwaway safety. Reusable and refreshable, your RESTUBE buoy stays with you winter after winter while protecting both you and the planet.

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Ocean rescue scene: One person extends a bright orange RESTUBE rescue buoy to another in distress – bringing buoyancy and safety in rough waters.

Support When It Counts

In icy water, looking after each other is everything. If someone nearby needs help, your RESTUBE buoy is ready to step in — quickly, safely, and with the distance you need. You can pass the buoy to others from a safe distance — protecting yourself while giving them the support they need when it matters most. True strength shows when you're able to share your safety.

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RESTUBE When Ice swimming Gets Critical

When you’re ice swimming, seconds can make all the difference. With our Safety Buoy, you can react instantly – protecting yourself, 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!

Icon with two hands symbolizing the help one cangive another using RESTUBE safety buoy

Others in need?

Pass on 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 of an anatomical heart, symbolising that RESTUBE buoy can be of help in a critical sitution involving circulatory issues

Circulatory problems?

Pull the trigger for buoyancy, stay calm!

Experience matters – Athletes trust RESTUBE

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 & world record holder

"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."

A swimmer with RESTUBE safety buoy in open water – for enhanced safety and visibility.

Dennis Stemme | Ice Swimmer & Year-round swimmer

"I enjoy swimming in cold and icy water. In these extreme conditions, I need to be able to take a break from time to time to get my bearings or simply to regulate my breathing. That's why the RESTUBE Safety Buoy accompanies me on my way through the frosty waves."

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.”

RESTUBE Safety Buoy

Your Freedom in the Water Starts with Safety

A simple pull delivers powerful reassurance. The compact buoy rests lightly at your hip — out of sight, out of mind, until the moment it counts. One quick press, and it springs to life in seconds. RESTUBE is your anchor of trust in freezing conditions, because that’s when safety truly matters. Whether you’re ice swimming or building resilience through cold-water dips, RESTUBE guides you safely through every winter challenge. Feel prepared, stay confident, and fully embrace your time in the water.

FAQ about RESTUBE Buoys & Ice swimming

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
Smiling man in a wetsuit holding onto his RESTUBE buoy – relaxed safety while swimming in open water.

Find out more about our RESTUBE safety system

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Sustainable & PVC-free

Responsibility for people & nature: Durable materials, free of harmful PVC.

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Quality & Warranty

German quality: 2-year warranty on direct purchases.

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Tested Quality

Every RESTUBE Safety Buoy is checked for perfect quality by trained employees

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Worry-Free Testing

Test for 30 days: Money-back guarantee if RESTUBE doesn’t convince you.

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