
I bought these masks for my little 10 year old daughter (4ft 9in), they are small. She likes the fit because it's breathable and doesn't fog up her glasses. If your child is an average of 10 years or older (a teenager) I would try the middle one. Based on their experience we bought our masks in bulk and we love them Adjustable ear loops make it easy to fit. We have 11 in a pack as promised in the listing. We love that they're stiff - when you breathe in, they don't press on your face. As a mask, choose Bluna or Dr. Puri as they are much softer. We chose BOTN brand masks based on video reviews by Aaron Collins. He is a YouTube engineer who has done extensive mask testing and has a lot of information to share. I like to buy from BOTN Korea seller @botnkorea Instagram account linked directly from seller page. Also, I've bought BOTN masks from other Korean importers (as recommended by Aaron Collins) and compared them to the ones I got from this seller. The masks themselves are identical, the main difference being that the packaging on the small masks is in English.

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