Exercise your lungs with our sophisticated Respiratory Trainer, designed to strengthen your respiratory muscles through tailored workouts. body is made of soft silicone, ensuring a comfortable, safe experience during each use. Its variable resistance mechanism allows users to incrementally challenge themselves, promoting breath control. Features -Color:Assorted color -Material:Silicone -Size:10.01X5.00X3.00cm/3.93X1.97X1.18in -Resistance adjustment: Our breath trainer enables you to tailor the workout intensity according to your actual fitness level or ongoing . -Silicone build: The lung exercise tool, crafted from premium silicone, features safety during daily routines and facilitates effortless cleaning. -Breath capacity boost: Committing to routine use of our lung exercise tool strengthens respiratory muscles, improving overall breathing -Convenience in use: Weighing light and compact in size, this portable respiratory trainer is travel-friendly and simply integrated into your everyday life. -Multi-purpose use: The muscle trainer caters to diverse needs, benefiting athletes, singers or people who just want simple lung training. Package list: 2