Fitness Trainer: Designed as a fitness trainer, it helps improve lung capacity and respiratory efficiency, perfect for athletes and fitness enthusiasts. Diving Mouthpiece: Equipped with a diving mouthpiece, this trainer allows for efficient oxygen intake underwater, enhancing diving experience. RMT Training Tool: This tool is specifically designed for RMT (Recreational Marine Training) purposes, making it a must-have for diving enthusiasts. Silicone Material: Made from durable silicone, this trainer offers longevity and resistance to wear and tear, making it ideal for frequent use. Ergonomic Design: The Silicone Lung Fitness Trainer features an ergonomic design, ensuring comfort and ease of use during RMT training.