Adjustable Resistance: Customize your breathing workout with ease using the adjustable resistance knob on this lung trainer. Rotate the valve to increase or decrease breathing resistance, tailoring your training intensity for optimal results. Compact & Portable: Take your respiratory training on the go with this lightweight and compact breathing muscle trainer. Whether you're at home or outdoors, its portable design allows for convenient use anytime, anywhere. Maximize vitality without compromising space. Enhanced Endurance: Strengthen your respiratory muscles and expand your diaphragm with this portable lung exerciser. Boost endurance and breathing capacity through targeted exercises, improving overall exercise performance and enhancing respiratory efficiency. Versatile Design: The built-in lanyard feature of this breathing trainer offers hands-free convenience during various sports and activities. Seamlessly incorporate it into your fitness routine, from high-intensity workouts like running and cycling to martial arts and outdoor adventures. Fitness Essential: Elevate your fitness regimen with this essential breathing trainer designed for fitness enthusiasts. Perfect for high-intensity activities, it enhances respiratory endurance, enabling you to unleash peak athletic performance. Transform your daily exercise routine with this valuable fitness tool. Description: Improve your respiratory strength with this Breathing Trainer featuring adjustable resistance. Easily adjust the intensity by rotating the valve to suit your needs. Compact and lightweight, it's perfect for on-the-go or home use. Strengthen your respiratory muscles and expand your diaphragm with targeted exercises. The built-in lanyard design allows for hands-free use during various activities. Ideal for fitness enthusiasts, it enhances endurance for high-intensity workouts like running, swimming, and martial arts. Incorporate this trainer into your daily routine to elevate your fitness program and achieve peak performance. Item Name: Breathing Trainer Material: Silicone, ABS Features: Men Women Universal, Portable Size, Workout Equipment Size Details: 8cm x 3.3cm(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Breathing Trainer 1 x Lanyard 1 x Cleaner 1 x Storage Bag