Review on 🏋️ Iron Crush Workout Mask for Respiratory Strength Training – High Altitude Exercise Mask with 24 Breathing Resistance Levels – Running Mask for Boosting Performance in Men and Women by Shawn Pollock

I love workout masks and have found them to help a bit with what I call a full body workout. there are recesses in the cheek area. Otherwise, it's a snug fit that pokes out the cheeks a little and gives off a chipmunk vibe. This also makes it a little less convenient. The height adjustment is also great and the nose/mouth part is very well done. It handles airflow well, making it a smart option for breath strength training. Again, spandex/elastic shouldn't have any cutouts on the side, IMO.