Maximus Lung Trainer Device | VO2 Max Trainer for Endurance Training, Breathing Exercise & Lung Capacity, Portable Resistance Exerciser for Supporting Fitness & Oxygen

Lightweight 1oz device, Designed for use during exercise.
Patented DART Technology – MAXIMUS is the first and only Resistance Breathing Trainer Device designed with Dual Airflow Resistance Technology (DART), allowing users to dial up airflow O2 resistance equally in both directions to help support respiratory lung fitness, vo2 max, and performance.
Flexible Multi-Level Dual Airflow Resistance – This innovative portable device offers five customizable levels (ranging from 25% to 75% airflow O2 restriction) via a dual airflow resistance mechanism, enabling personalized control for fitness, lung capacity training, vo2 max respiratory training, and general wellness support.