Review on FDBRO Fitness Training Mask 3.0 with Carry Box - High Altitude Face Mask for Running, Resistance, Cardio, Endurance Sports by Jared Coleman

The mask just arrived today and I can already see that this is the coolest of several training masks I've tried or bought over the last few months. It looks great, has a great filtering system, and it's remarkable that you don't have to take it off to have a conversation with another person. I wear a size XL cap and would like the mask to also be available in size XL, but L is enough and the design is right too.