Brand new, unopened product. High-Quality Material: The trainer is made of high-quality materials, with no unpleasant odors, ensuring comfortable use. Target Audience: Suitable for anyone looking to improve their exercise tolerance. Easy to use for all ages, from young people to the elderly. Easy to Clean: The mouthpiece and tube can be disassembled for easy cleaning and storage. The base is stable and durable. Meets Diverse Training Needs: With three different settings based on color and gear, you can set goals and incorporate them into your daily training. Daily Improvement: Consistent training for 3-5 minutes a day yields better results. Ideal for incorporating into daily exercise habits and training programs.