arisummerland, For peeps in the US. I had a link up for a company in Canada, but they don't ship to the states.
I am ordering today to give it a try. I do have a few work days where I have to wear a mask for extended periods, so staying hydrated has been a challenge (my job is physical).
I have seen posts from other Mastodonians saying they have used these on plane flights and avoided catching any and all bugs. Cool!