Flutter Valve Breathing Exercise Device for Lungs, Mucus Removal & Lung Strengthening, Adjustable Resistance Expiratory Trainer, Portable Lung Exerciser for Mucus Clearance

Brand: TyeinGoFeatures: Mucus Removal & Lung Strengthening: The Flutter Valve Breathing Exercise Device for Lungs is designed to help clear mucus and strengthen your lungs. It uses a unique pressure mechanism to loosen mucus in your airways, making it easier to expel. Adjustable Resistance with Three Steel Balls: This lung exerciser device features three different-sized steel balls to adjust the resistance level for personalized lung training. Control the airflow to match your specific needs, whether you're a beginner or experienced user. Portable & Convenient Design: Compact and lightweight, this breathing exercise device for lungs is easy to carry, making it perfect for use at home, work, or on-the-go. No batteries required—simply take it anywhere to maintain your lung training routine. Its portability makes it an ideal companion for travel or daily use, ensuring consistent lung exercise. Durable, Medical-Grade PC Material: Constructed from durable medical-grade PC material,