DetailsBreathing is always the key and an essential part of your success when it comes to sports; whether you're a veteran of an active lifestyle or you've recently discovered the benefits of a proper workout.Take your fitness; sport; and game to the next level by adding this Training Mask into your workout routine today. Increased growth hormone will help you burn more fat; build more muscle; and recover faster after a tough workout. This training mask boosts your performance. It maximizes the benefits you get from your workout results. The mask breathing exercise devices were engineered to apply 24 variable levels of tension to the breathing muscles by controlling airflow which increases tension on your breathing muscles. Up your game with Elevation Breathing Sports Mask. Take your training to the next level and boost your training performance! DETAILS - Mask supports 24 levels. Highest quality Mask - This mask is made from superior quality material and stitched with perfection. It does not rip off easily and you won't face any holes or breakages. It is durable and lasts longer than some other masks. For all fitness levels - Whether you are beginning to train your respiratory muscles or you are a professional; this high-intensity mask is suitable for everyone. The resistance levels are customizable; you can adjust them according to your level. Resistance Levels - This mask has resistance levels from beginner to pro. Its multiple resistance levels allow you to work on your breathing muscle strength and techniques.