SAVE YOUR TRAINING TIME - The high altitude training mask creates a simulated high altitude environment, encouraging deeper breathing and helping improve workout efficiency. BOOST LUNG CAPACITY AND ENDURANCE - By restricting airflow to simulate high altitude conditions, the mask promotes deep breathing, helping strengthen respiratory muscles and enhance lung performance over time. SUITABLE FOR ALL FITNESS LEVELS - The mask features two air pathways, each with 4 adjustable resistance levels, plus two additional soft valves, providing up to 24 customizable breathing resistance settings. Ideal for users from beginner to advanced. ERGONOMIC AND COMFORTABLE DESIGN - Made with high-quality materials and designed to fit comfortably on various face shapes. Adjustable straps ensure a secure fit, while the soft silicone seal helps prevent slippage and maintains an effective seal during exercise. IDEAL GIFT FOR FITNESS ENTHUSIASTS - Packaged in a premium gift box, this training mask makes a thoughtful present for anyone committed to improving their fitness. NOT INTENDED FOR MEDICAL USE OR PROTECTION AGAINST VIRUSES INCLUDING CORONAVIRUS