Review on 🏃 TRAININGMASK Training Mask 3.0 - Breathable Cardio Workout Mask for Running, Cycling, and Exercise – Black Training Mask by Kyle Ross

Seems to be an acceptable build quality. However, I couldn't get it to fit snugly around my face without the strap slipping around my neck. Also, the throttle valve is just a sliding piece of plastic with tight tolerances and no additional filtering/mitigation, resulting in more breath noise and worse annoying whistling at maximum settings. It's useless to me, I threw it. Presumably for a person with a normal face shape using it on low settings this might come in handy.