Portables Respiratory Muscle Strengthener Breathing Exerciser Lung Trainer Suitable for Athletes and Seniors

Improve respiratory muscle strength and enhancing cardiovascular function. Adjustable resistance suitable for users at different stage. Environmental protecting component, portables and light weight, adjustable resistance. Portables Respiratory Muscle Strengthener Breathing Exerciser Lung Trainer Suitable for Athletes and Seniors. Features: Improve respiratory muscle strength and enhancing cardiovascular function. Adjustable resistance suitable for users at different stage. Environmental protecting component, portables and light weight, adjustable resistance. Suitable for various training intensities and easy to clean. Athletes, fitness enthusiasts, elderly people, patients with chronic respiratory diseases, and those who need to improve their cardiovascular function. Specifications: Color: Three Elections. Dimension: 6.3×7×2.8cm/2.48×1.1×2.76in. Component: Silicones+ABS. Package Includes: 1pc Respiratory Muscle Trainer. note: 1. Please allow 1-2cm errors due to manual measurement, mak