My son is an athlete and his high school announced that when they do go back, they’ll have to wear masks all day (except when they eat). We’ve been looking for the most comfortable masks available and gave this option from Adidas a try. You’ll get three masks for $16 and so far they are much more breathable than any other masks we have. I truly believe working out in them will be fine (though of course we’re not working out for at least a month).
Head over here to go through Ebates, search for Adidas, and automatically get 2% back into your Ebates account (you’ll also get a $10 bonus after your first $25+ purchase). Ebates will mail you a check a couple of times a year and the online shopping adds up fast!
Under Armour also has a sports mask that is back-ordered until 8/17. It is $30.
Hope this helps! We’re all in this together!