Portable Design: Compact muscle trainer measuring 10x5cm Conveniently fits into your daily routine for on-the-go workouts Enhance muscle strength and flexibility anytime, anywhere. Adjustable Resistance Levels: Customizable rotary valve for tailored muscle training Easily adjust resistance intensity by rotating left or right Optimize your workout with personalized settings for effective results. Versatile Training Tool: Ideal for various sports activities including track and field, running, swimming, gymnastics, martial arts Enhance performance and endurance across different disciplines. Premium Silicone Material: Crafted from ultra-flexible food-grade silicone Ensures safety and durability during muscle training process Easy to clean and maintain for long-lasting use. Safe and Effective Muscle Training: Individually packaged for hygiene and safety Comprehensive muscle training suitable for diverse users Achieve optimal fitness levels with this high-quality breathing trainer. Description: Improve your muscle strength and endurance with this versatile breathing trainer. Crafted from ultra-flexible silicone, this trainer offers a safe and high-quality muscle training experience. The adjustable resistance feature allows you to customize the intensity by simply rotating the valve. Its compact and portable design, measuring 10x5cm, ensures you can conveniently incorporate muscle training into your daily routine, no matter where you are. Individually packaged for cleanliness, this trainer is a must-have for sports enthusiasts engaging in activities like track and field, running, swimming, gymnastics, martial arts, and outdoor adventures. Item Name: Breathing Trainer Material: Food Grade Silicone, APS Applicable Scenarios: Running Sports, Fitness Equipment, Health Massage, Fitness And Beauty, Others Features: Men Women Universal, Portable Size, Workout Equipment Size Details: L: 10cm, W: 5cm(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