WellO2 is the world’s only breathing trainer that combines resistance with warm steam to support your lungs naturally. From people with breathing challenges to singers, snorers, and even top athletes – including those at West Ham United – over 150,000 users trust WellO2 to strengthen their lungs, ease their breathing, and boost their performance. Whether you're recovering, training, or simply seeking better sleep and energy, WellO2 helps you take back control – one breath at a time.

Breathe easier – natural support for breathing difficulties

WellO2 is designed to make breathing feel easier – especially when it feels restricted or uncomfortable. It combines warm steam inhalation with gentle breathing resistance to help support:

  • Clearer nasal breathing and reduced congestion
  • Calmer, deeper breathing patterns
  • Loosened mucus and eased cough or irritation
  • Moisturised airways and better resilience in dry or cold air
  • Strengthened breathing muscles over time – by up to 20%* in a month
  • Natural recovery after physical exertion or illness

Drug-free and easy to use, WellO2 offers natural support for your breathing – every day.

Perform stronger – breathing training for sport and recovery

Efficient breathing is key to physical performance. WellO2 supports athletes and active individuals by warming up the airways and training the breathing muscles – helping you perform and recover better. Regular use may:

  • Improve respiratory muscle strength and endurance
  • Enhance chest mobility and reduce upper body tension
  • Promote calm, focused breathing before competition
  • Support faster recovery after training
  • Strengthen respiratory resilience during sports seasons

Pair WellO2 with the MyBreath smart mouthpiece to track your breathing strength and follow your progress in real time using the WellO2 app.

Sleep better – support for calmer nights and deeper rest

Breathing discomfort can disrupt sleep – whether from congestion, snoring, or waking up tired. With just a few minutes of use before bed, WellO2 may help:

  • Clear airways and support nasal breathing
  • Promote relaxation and calmer breathing before sleep
  • Strengthen nasal muscles, which may reduce snoring
  • Improve overall sleep quality and next-day energy

WellO2 offers a natural, drug-free way to support more restful nights and better recovery.

Support your voice – breathing training for vocal strength and recovery

Voice professionals rely on strong, steady breathing. WellO2 is used by teachers, singers, presenters, and performers to support vocal endurance and recovery. It helps:

  • Warm up the respiratory system before performances
  • Maintain breathing muscle strength for long voice use
  • Ease tension and promote vocal relaxation
  • Support airway health during busy performance periods

Whether you're on stage or in meetings all day, WellO2 helps keep your voice steady and your breath supported.

About WellO2

The story of WellO2 begins with Aulis Kärkkäinen, the founder, whose lifelong battle with breathing difficulties inspired a groundbreaking innovation. From childhood, Aulis experienced wheezing and shortness of breath, especially during cold winter nights. These challenges followed him into adulthood, affecting his daily life and well-being.

Inspired by the soothing effects of steam in the traditional Finnish sauna, Aulis set out to find a natural, effective way to support his breathing. He joined forces with Finnish health experts and engineers, and together they developed WellO2 – a unique breathing trainer that combines warm steam inhalation with gentle breathing resistance. This innovative approach helps open the airways, ease breathing, and strengthen the lungs.

What began as a personal mission has grown into a trusted wellness solution, used by over 150,000 people worldwide – including singers, athletes, and anyone seeking better respiratory health. WellO2 is also proud to be the official respiratory training partner of West Ham United, supporting top-level athletes with natural breathing support both on and off the pitch.

Aulis’s journey from struggle to solution reflects the Finnish spirit of resilience and innovation, offering a natural way to breathe easier and feel better every day.
Aulis Kärkkäinen, Founder at WellO2.

FAQs

What is WellO2?

WellO2 is a lung-strengthening breathing exercise device that combines inspiratory and expiratory counter pressure breathing and the inhalation of warm steam. The device improves and maintains the condition of the respiratory system.

How does it work?

The device is used to perform guided respiratory exercises. The user first exhales into the device and then inhales the air back through it. During this process, the device provides gentle resistance for both exhalation and inhalation, while also delivering warm steam into the airways. This resistance training strengthens the respiratory muscles, and the warm steam helps to open and moisturise the airways.

The WellO2 device features adjustable breathing resistance, making it suitable for both beginners and experienced users. You can also choose from three temperature settings to personalise the level of warm steam based on your preferences and needs.

The WellO2 breathing trainer can be used for both oral and nasal breathing exercises. When used through the mouth, the warm steam is directed to the throat area. When used with the nasal mask, it also moisturises the nasal mucosa, helps clear a blocked nose, and supports the small muscles in the nose and nasopharynx.

Can the WellO2 device be used by multiple people?

Thanks to the device's in-built cleaning program and personal mouthpieces, the WellO2 device can be used by multiple people. The package includes three differently coloured mouthpieces for easy identification. Other parts of the device are suitable for shared use.

What does the package include?

The package includes:

  • WellO2 breathing trainer
  • 3 different coloured mouthpieces
  • Nasal mask and extension hose
  • Breathing regulator
  • Power base
  • User instructions
    • Does the WellO2 device have a warranty?

    Yes, the WellO2 device comes with a 24-month warranty.

    Is there any research behind it? Does the product really work?

    Yes, WellO2 is backed by clinical studies and trusted by over 150,000 users worldwide. You can read more about the clinical studies and in-depth research here.

    Is it suitable for me? I have long-term airway problems

    WellO2 is designed to support breathing for people with a range of challenges, like age-related issues, mild respiratory concerns, or breathing discomfort from airway problems.

    Do not use the device if you have had:

  • Pneumothorax
  • A recent disease or injury of the tympanic membrane
  • A recent surgical operation on your head, chest or abdomen

    • If you are not sure whether you can use the breathing exercise device, please discuss starting the breathing exercises with your GP.

    What’s WellO2 MyBreath?

    MyBreath is a smart mouthpiece used together with the WellO2 breathing training device. It allows you to measure, track, and improve your breathing! It is used together with both the WellO2 device and the WellO2 app.

    With the WellO2 MyBreath smart mouthpiece, you can track:

  • Respiratory muscle strength, which indicates how well the respiratory system can function in various life situations.
  • Respiratory capacity, which indicates the size of your lungs and how much of your lung capacity you utilise.
  • Airflow in the respiratory tract and bronchial tubes, indicating how effectively air can flow into the lungs along with the breath.

    • *Kuronen, I., Heinijoki, J. & Sovijärvi, A. (2023) Effects of Low Workload Respiratory Training with Steam Inhalation on Lung Function in Stable Asthma: A Controlled Clinical Study. Clinical Physiology and Functional Imaging, 44, 100–111.

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