Reusable

PVC-Free

Nathalie Pohl and over 550.000+ other people already trust RESTUBE

EXTREME SAFETY BUOY

The Safety Buoy for water sports in rough conditions!

Why water enthusiasts choose RESTUBE:

Instant buoyancy

Ready in seconds

Ultra-light fit

Hardly noticeable

Reusable design

Replace cartridge and reuse

Oral inflation

Backup when needed

Versatile use

Swim, SUP, kayak and more

For safer swimming and a more confidence on the water.
With the innovative RESTUBE Safety System (RSS)
Get additional buoyancy in seconds when needed
Built to last: ultra-light, tough, and made to be reused again and again

Water Activities:

$ 149.99

4.6

Tax excluded.

Color: Azure blue

Estimated Shipping: 2-3 working days

Free shipping on orders over $39.99

30 days money-back

2-year warranty

Description

You set the limits, Restube Extreme is built to go with you. From harsh conditions to high-intensity water sports, it stays by your side when it matters most, giving you the confidence to push farther with reliable safety at hand.

Restube Extreme includes all the core features of the Restube Safety System:

Versatile performance across demanding water activities
Compact, durable design that’s always ready when you need it
Optional manual inflation through the mouth valve
Fully reusable for long-term, rugged use
Trusted pull-to-inflate release mechanism

Built for the Toughest Conditions:

Reinforced, extra-robust buoy and pouch materials for maximum durability in extreme environments
Secure split-pin safety closure to prevent accidental inflation during high-impact movement
Multiple attachment options—mounts directly to your harness, or vertically/horizontally for a customized setup
Integrated whistle for clear emergency signaling
Small internal pocket for storing essentials
Compatible with all RESTUBE READY products for seamless gear integration

Technical Details

Buoyancy:75N (~7.5kg)
Net weight:225 g
Buoy length:65 cm
Buoy diameter:13 cm
Restube READY: Yes
Release mechanism: CO2 Cartridge (16g)

Scope of delivery:

- EXTREME with 75 Newton buoy
- Bag with split pin closure
- Belt
- CO2 Cartridge with 16g
- Whistle

Safety instructions:

Contains gas under pressure; may explode if heated.

Manufacturer

Restube GmbH

Dieselstraße 1
76327 Pfinztal- Berghausen
Germany

+497214869010

hello@restube.com

Shipping

We ship orders across the continental U.S. using trusted carriers:

USPS Ground Advantage (recommended)
FedEx Ground

At checkout, you’ll be able to choose the option that works best for you.

Why USPS Ground?

Because Restube includes a CO₂ cartridge, shipping regulations apply. USPS Ground Advantage is the most reliable way to get your order to you safely and without delays.

Free Shipping

Get FREE shipping on all Restube orders over $100 (continental U.S.)

Automatically applied at checkout—no code needed.

Manual

Find the manual for EXTREME SAFETY BUOY here.

EXTREME SAFETY BUOY

$ 149.99

How RESTUBE safety buoy works

Always have your Safety Buoy with you

Pull the trigger in an emergency

Now you have time & can take a deep breath

Use the buoy & draw attention to yourself

You can help others

Be visible for others

The wind was so strong that I lost my board and then the kite. I was completely exhausted and desperate when I remembered the RESTUBE safety buoy on my harness. Luckily! I made it to shore with the buoy.

Alexandr

During a trip to the Outer Banks, one of my sons got caught in a strong current and was pulled 25 meters into the water. It was terrifying to watch, and I felt helpless. I bought the Extreme to avoid feeling that way again. I'll wear it on my next beach visit and hope I never need to use it.

Dan

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 use EXTREME for a few weeks for kitesurfing. Once attached to the harness, it’s always with me, providing extra flotation, when it comes to any critical situation. I'm especially impressed by its design and quality, and it's reassuring to know I can help others in an emergency.

Steffen

Typical critical situations in the water!

Fading power?

Pull the trigger for buoyancy!

Others in need?

Pass on the buoy!

Unexpected current?

Lean over the buoy!

Got a cramp?

Take a break, relax over the buoy!

Worried about the kids?

They are safer with additional buoyancy!

Watch EXTREME SAFETY BUOY in Action

EXTREME immediately provides additional buoyancy, helps effectively and increases your scope of action.
For you! For your family! For your friends!

One buoy for your adventure

RESTUBE Safety System

The RESTUBE Safety System stands for innovative safety technology, developed in Germany to the highest quality standards. The versatile functions ensure reliable and fast buoyancy and significantly increase your safety in the water. Maximum flexibility for carefree water sports.

More about RSS

For the toughest conditions

The extra-strong buoy material ensures maximum safety, even in extreme conditions. This way, you can enjoy the freedom on the water without worries. The durable material with an efficient TPU coating provides reliable protection, allowing you to fully immerse yourself in your adventure!

With split pin lock

The split pin closure can withstand even the toughest external influences, such as big waves or the extreme forces of parachuting. The special lock prevents accidental release of the buoy in extreme conditions - it only releases when you want it to.

Windsurfer mit Trapezsegel und einer Restube extreme am Strand

Attachment to your equipment

The strong crossed straps on the back of the bag allow you to attach EXTREME directly to your equipment, such as your harness. The robust attachement gives you maximum flexibility and ultimate comfort - so you can truly embrace the waves.

Nathalie Pohl testet die Pfeife am Auslöser einer Restube Schwimmboje im Wasser, um Aufmerksamkeit zu erzeugen

Built to last

Built to last: ultra-light, tough, and made to be reused again and again

100+ professional Agencies are using RESTUBE

Prima, gerne wieder!

Idee gut, Umsetzung könnte aber besser sein

1. Packsack ist extrem eng. Das ist nich nur mühsam, sondern man befürchtet beim Packen ständig, dass etwas kaputt geht.
2. Gedruckte Anleitung ist ein Witz, winzig klein gedruckt. Auch das PDF beantwortet nicht bzw. schlecht die Frage wie die Leine um die gefaltete Boje gewickelt werden soll. Erst das Video hat geholfen (aber das muss man erst finden, der QR Code war da keine Hilfe).
3. Warum muss ich vor dem Gebrauch die Boje auspacken, Kartusche reindrehen und (mühsam, fehleranfällig) wieder einpacken? Bei meiner Automatik Schwimmweste (auch Versand) musste ich das nicht...

restube, ein wichtiges tool für jeden Wassersportler

Für mich als (DLRG) Rettungsschwimmer ist meine Boje ein stetiger Begleiter im offenen Wasser, im Dienst und auch privat.

Die Boje hatte im Verlauf unseres Dienstes schon ein Leben gerettet: der Kiter hatte seine Boje gezogen. So sind wir auf seine missliche Lage durch die gelbe Boje aufmerksam gemacht worden und wir wussten: hier ist Eile geboten.

Die Boje "Active" ist für meinen Geschmackt sehr eng gepackt, hier hätten einige, wenige Zentimeter mehr Material beim Packen mehr Luxus gebracht. Der Splint kann bei eingebauter Patrone kaum alle Schlaufen erreichen. Dies fiel bereits direkt nach dem Kauf auf, die Boje war noch nicht mit Luft in Gebrauch gewesen. Wenn dann noch etwas Restluft drin ist, sollte es noch enger werden.
Situation wurde bereits bei restube reklamiert.

Sonst kann ich nur jeden Wassersportler auf offenem Wasser ermutigen, eine Boje zu seiner eigenen Sicherheit mit sich zu führen.

Peace of Mind

This is my second Restube Extreme and I bought it for our family vacations to Outer Banks..The Restube Extreme brings peace of mind when the waves and rip currents churn up the surf....We love to swim and body surf in rough seas and having a Restube on our hip brings a level of safety to our adventurous swims!!

1 2 3

Find your RESTUBE Safety buoy!

You can find out which buoy is best suited to your water activities in just a few steps.

Go to product comparison Go to the quiz

Known from

FAQ

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

Our customer support team is available for your questions.

All FAQs

Who is Restube extreme for?

Restube extreme is made from extra strong buoy and bag material, making it ideal for rough conditions in and on the water. The split pin closure also prevents accidental opening of the bag.

Restube extreme is suitable for kitesurfing, windsurfing, surfing and stand-up paddling in waves or on the river.

What is the difference between the BEACH, ACTIVE and EXTREME Safety Buoy?

BEACH has a buoyancy of 50N and is ideal for families, children and seniors for leisure activities on and in the water. It is also suitable for stand up paddlers in swimwear in the summer - wherever there are no swimming aid regulations. ACTIVE has 75N buoyancy and is ideal for swimming or stand-up paddling, for training or competitions. EXTREME has a buoyancy of 75 N and is suitable for rough conditions when kite- and windsurfing, surfing or in professional use.

Can I use Restube more than once?

Yes, after replacing the CO2 cartridge, Restube is immediately ready for use again. The sales package contains Restube incl. an original RESTUBE CO2 cartridge that must be screwed in before use. After use, Restube is very easy to prepare for use again: Deflate, insert a new cartridge, fold the buoyancy chamber according to the printed instructions, and stow the whole thing in the pouch! ATTENTION: Only original RESTUBE CO2 cartridges are 1.) 100% quality tested, 2.) seawater resistant, 3.) level tested and 4.) the necessary release force is matched to the release. The cartridges comply with the standard for life jackets DIN EN ISO 12402-7. If other cartridges are used, it cannot be guaranteed that Restube will fill without problems in an emergency and the trigger may be damaged.

Detailed instructions for how to get Restube ready to go again are available in our blog: https://www.restube.com/de/blog/packanleitung-fuer-dein-restube/

How many times can a CO2 cartridge be used?

A CO2 cartridge can be used to trigger the Restube once. Afterwards, the empty CO2 cartridge must be removed, and a new original RESTUBE CO2 cartridge must be inserted.

This is simple, and only takes a few steps. You can view an instruction video here: https://restube.com/de/blogs/news/how-to-pack-restube-care-and-maintain-correctly

You can also blow up the Restube manually using the mouth valve. This is a practical option if you are using the Restube as a swimming buoy, or for snorkeling.

You can purchase a 2-pack of original RESTUBE CO2 cartridges from our shop!
10.9 g CO2 cartridge for Restube beach: https://restube.com/de/collections/cartridges/products/restube-beach-spare-cartridge
16g CO2 cartridge: https://restube.com/de/collections/cartridges/products/restube-spare-cartridges

Where does RESTUBE produce?

RESTUBE products are mainly produced in Vietnam. The production facility fulfils strict social and environmental standards and is regularly inspected by internal RESTUBE employees as well as external audits.

Our customer support team is available for your questions.

All FAQs

EXTREME SAFETY BUOY

The Safety Buoy for water sports in rough conditions!

How RESTUBE safety buoy works

Typical critical situations in the water!

One buoy for your adventure

Safe with the RESTUBE Safety Buoy

100+ professional Agencies are using RESTUBE

Customer Reviews

Known from

FAQ

Let customers speak for us