Will I be able to freedive or scuba with this on (without damaging it?

Yes, you can go diving with Restube. However, you must keep the following in mind: When you descend, the ambient pressure increases by one bar for every 10 m of water depth; at the same time, the buoyancy force at depth is reduced because the gas is compressed. This results in the following buoyancy depending on the depth: 0m depth = 1 bar = full buoyancy = 75N = 7.5kg 10m depth = 2 bar = half buoyancy = 37.5N = 3.75kg 20m depth = 3 bar = third buoyancy = 25N = 2.5kg 30m depth = 4 bar = quarter buoyancy = 18,75N = 1,87 kg 40m depth = 5 bar = fifth buoyancy = 15N = 1,5 kg As you get higher again, the resulting buoyancy of the buoy increases until it is fully available again at 0m. The deeper you dive, the lower the buoyancy. Feel free to let me know if you have any further questions. Best regards, Philipp /for RESTUBE

How deep can i Submerge this?

You can go diving with Restube. However, you must keep the following in mind: When you descend, the ambient pressure increases by one bar for every 10 m of water depth; at the same time, the buoyancy force at depth is reduced because the gas is compressed. This results in the following buoyancy depending on the depth: 0m depth = 1 bar = full buoyancy = 75N = 7,5kg 10m depth = 2 bar = half buoyancy = 37.5N = 3.75kg 20m depth = 3 bar = third buoyancy = 25N = 2.5kg 30m depth = 4 bar = quarter buoyancy = 18,75N = 1,87 kg 40m depth = 5 bar = fifth buoyancy = 15N = 1,5 kg As you get higher again, the resulting buoyancy of the buoy increases until it is fully available again at 0m. So the deeper you dive, the lower the buoyancy. Feel free to let me know if you have any further questions. Best regards, Philipp /for RESTUBE

Is a CO2 cartridge pre-installed or sold separately?

There is one cartridge coming with the Restube. But it comes separately. You need to screw it in - but it's very easy. Please find attached the instruction video (starting at 0:50). It takes only one minute to make Restube ready to use. Let me know if you have any questions. Best regards, Philipp /for Restube

No, Restube is not certified as a personal floating device. At the moment, there is no category where Restube fits in to be certified as a pfd (there is no category for a belt with an attached floating buoy). Best regards, Philipp /for RESTUBE

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🟡 Float smart, swim fearless — your compact lifeline in every splash!

REUSABLE RELIABLE - Swap out the CO2 cartridge and you’re ready for your next adventure—sustainability meets safety.
SEAMLESS COMFORT FIT - Adjustable waist belt keeps the buoy secure without interfering with your swim or paddle.
EFFORTLESS SAFETY ON THE GO - Compact and featherlight design means you barely notice it—until you need it.
INSTANT VISIBILITY INSTANT RELIEF - Pull the trigger cord to deploy a vivid yellow buoy that signals for help and supports you immediately.
ENGINEERED IN GERMANY TRUSTED WORLDWIDE - Precision craftsmanship ensures dependable buoyancy of 11 lbs (50 N) for peace of mind in open water.

The Restube BEACH One-Pull Inflatable Water Safety Buoy is a sleek, ultra-lightweight (190g) emergency flotation device designed for swimmers, anglers, and water sport enthusiasts. With a powerful buoyancy of 11 lbs (50 N), it inflates instantly via a one-pull CO2 cartridge trigger, revealing a bright yellow buoy for high visibility and safety. Compact and comfortable with an adjustable waist belt, it’s reusable by replacing the CO2 cartridge, making it an essential, reliable companion for all your water adventures.

Reviews

A**ー

最高！！

このくらい小さくないと、どうせつけない最高！！

2.05.2025

ア**備

コンパクト

もしもの時の保険的な物。出来るだけ小さい方がいい。

16.03.2025

高**充

コンパクト

コンパクトで着用時、邪魔にならない。

25.11.2021

H**O

コンパクトでいいかも

半信半疑で購入しましたが超コンパクトサイズで使い勝手いいかも❗替えのボンベも付属してあるのでいいですね浮力とはわかりませんがお守り代わりでwww

25.03.2023

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TrustScore 4.5 | 7,300+ reviews

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Model Number	RT-01101-SB
Color	jet black
Size	‎15 x 6 x 5 cm
Material	Nylon Thermoplastic Polyurethane
Batteries Included	No
Life Vest Type	Type III
Product Dimensions	15 x 6 x 5 cm; 160 g

Restube BEACH One-Pull Inflatable Water Safety Buoy | Float Buoyancy Aid for Swimming, Fishing, Sailing & SUP | Compact One Size Fits All Survival Kickboard

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