Allows you to customize the intensity of your training according to the desired results. With adjustable pressure levels; adjust the flow valve to find the perfect resistance for your training needs, and get the best training effect with personalized resistance adjustment. Our muscle trainer is a musthave for sports enthusiasts and is suitable for highintensity activities such as athletics, running, swimming, gymnastics, martial arts and outdoor activities. Made of ultraflexible pure silicone, this trainer provides comprehensive abdominal muscle training for a variety of users, and its compact and portable design ensures comfort and convenience. Continuous use of the muscle trainer can improve your physical health, enhance abdominal muscle endurance, and allow you to experience professional muscle training. Our muscle trainer is suitable for almost everyone without side effects. Easy to adjust to meet different needs and achieve better results.