• THE O2 BASE™ mouthpiece for respiratory resistance training – boost stamina, lung capacity, and fight endurance
  • Black resistance breathing trainer for MMA and combat athletes, improves lung strength and stamina
  • White adjustable breathing device for cardio conditioning, ideal for boxers and high-intensity athletes
THE O2 BASE™
TRUSTED BY +5098 FIGHTERS
$16.99
$16.99
Sold out
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HOW TO USE

1. Place the mouthpiece between your teeth – Bite gently to secure it.

2. Adjust resistance by turning the dial – Start light, then increase intensity over time.

3. Train with it during cardio, shadowboxing, or warm-ups – Keep your breathing steady and controlled throughout.

OUR GUARANTEE

We stand behind our products and want you to be completely satisfied with your purchase.

That's why we offer a 30-day money-back guarantee on all of our products.

SHIPPING

We ship worldwide and all orders are dispatched with their tracking numbers within 24-48 hours.

USA: 5–7 working days

UK: 6–8 working days

EU: 6–8 working days

International: 6–14 days

THE O2 BASE™ mouthpiece for respiratory resistance training – boost stamina, lung capacity, and fight endurance

THE O2 BASE™

$16.99
$16.99
Sold out

  • I added this to my routine for just 10 minutes a day and my breathing control during rounds has seriously improved. Super compact and actually kinda fun to use.

    Youssef K.

  • Didn’t think something this small would have such a big effect. My stamina is definitely better, and I feel less winded after intense sessions. For the price, it’s a no-brainer.

    Marcus V.

  • Perfect tool for improving breath strength. I use it before training or during warm-ups — it helps activate my lungs and gets me in the zone. Highly recommend!

    Tyler J.
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    BENEFITS

    The most powerful tool for building stamina and elite-level breathing control.

      Normal Breathing
    BOOSTED STAMINA
    CONTROLLED BREATHING
    CARDIO TOUGHNESS
    MENTAL DISCIPLINE

    SCIENCE BEHIND

    BOOSTED STAMINA

    Restricted airflow increases respiratory muscle activation — leading to stronger lungs and improved oxygen efficiency over time.

    CONTROLLED BREATHING

    By limiting oxygen intake, your body adapts to breathe slower and deeper, which enhances calm under pressure and recovery between exchanges.

    CARDIO TOUGHNESS

    Your heart and lungs are pushed harder, mimicking altitude training. The result? You’ll be able to push longer at high intensity.

    MENTAL DISCIPLINE

    Training under air restriction builds mental resilience — ideal for preparing for deep rounds or championship fights.

    RESULTS

    Combat athletes using THE O2 BASE™ reported:

    95%

    noticed better stamina during late rounds.

    91%

    said it helped simulate real fight fatigue in training.

    88%

    improved their breathing control during sparring.

    BACKED BY STUDIES

     

    Study 1

    Effect of Inspiratory Muscle Training on Performance in Trained Middle-Distance Runners

    "The present study conducted a 4-week respiratory muscle training intervention in order to investigate its effects on sports performance for recreational runners. Our results indicated that the 4-week IMT training (twice a day, 5 days a week) significantly improves participants’ inspiratory muscle strength, 800-m running performance and decreases the limb blood flow change rate. A possible mechanism that increasing MIP could delay the onset of respiratory muscle fatigue and help reduce lower limb blood flow change rate, finally improved 800-m sport performance."

    Source: PubMed Central, PMC

    Study 2

    Effects of Respiratory Muscle Training in Para-Athletes: A Systematic Review and Meta-Analysis

    "This review suggests that although RMT can enhance respiratory muscle strength and endurance"

    Source: PubMed Central, PMC

    Study 3

    Respiratory muscle endurance training and inspiratory resistive training in healthy active men

    "In conclusion, the present study showed that both RMET and IMT increased respiratory muscle endurance while only IMT improved maximal inspiratory pressure. However, neither training regimen was able to improve whole-body exercise performance during running or cycling, which was corroborated by a lack of change in quadriceps fatigue after high-intensity cycling. Therefore, the current study questions the ergogenic effect of RMT and the role of respiratory muscles in regulating the extent of peripheral fatigue developed during high-intensity exercise in healthy, active individuals."

    Source: Nature Scientific Reports

    FAQ

    What does the mask actually do?

    It simulates training at altitude by restricting airflow, which strengthens your lungs and improves oxygen efficiency.

    Can I use it during sparring?

    We recommend using it only for drills, shadowboxing, or conditioning — not live sparring.

    Does it make a real difference?

    Yes — it mimics altitude-style training, helping to build endurance, cardio strength, and mental control.