Breathing Trainer, Non-Measuring Exerciser, Portable Breathing Training Device with 2 Filters to Develop Respiratory Muscles and Strengthen Capacity

NATURAL RESPIRATORY TRAINING: This is an non-measuring exerciser. Experience drug-free airway relief with our vibration-enhanced breathing trainer. The vibration resistance effectively loosens mucus buildup while strengthening respiratory muscles. ENHANCED AIRFLOW HYGIENE SYSTEM: Upgraded with dual-filter protection (2 replaceable high-grade filters included) to ensure cleaner airflow during exercises. Making every breath safer and more revitalizing than basic breathing trainers. EASY TO USE: Simply choose your resistance steel ball (16/18/19mm) and snap it into the chamber - no tools or complicated adjustments. The pocket-sized design fits in any bag for gym sessions, travel, or office breaks. SMART RESISTANCE CUSTOMIZATION: Three steel balls create adjustable airflow resistance (light/medium/heavy). Perfect for all users and helps seniors maintain breathing function, assists athletes in altitude training. VISIBLE PROGRESS TRACKING: Includes 30-Day Breathing Challenge calendar. Just 10 minutes twice daily (morning/night) shows measurable improvements in breath-holding time and stamina within weeks.