Review (5/5): Mask on
I purchased this mask to use under my mask whenever I go to the gym because all the physical activity increases my breathing a lot and I end up damn near inhaling the mask right off my face. This mask offers a good frame that allows me to breath without sucking in the entire mask. It's big enough that it covers both the mask and the nose so breathing is covered regardless. Overall it's a good investment if you need to wear a mask while doing physical activities like working out or a physical labor job.