Hello Lauren, Thank you for your prompt reply. This is great customer service! I look forward to the second mask as the first is working as advertised. I love it! Thank you again for taking care of your customers.

The mask inner layer is very unstable - not at all secure inside the outer sleeve. Keeps sliding off or out. I got this primarily for use while running because of the advertised superior comfort and breathability during athletic activities. If anything this mask was very inconvenient during running. I had to keep stopping to adjust the inner layer. I am pretty sure I tried all ways available to secure the inner layer. Very disappointed, especially considering the exaggerated marketing and much higher than average price.

Excellent mask for running and gym. I highly recommend it!

Great mask for sports, great customer service.

Excellent mask for sports. I am a soccer referee and run 3-5 miles per game and this mask is great.

Very lightweight, flexible and yet still fits tightly at top / bottom / sides of my face. Great construction, just wish the inserts fit a bit better

Got these for my two high school athletes and everyone has been jealous of them. They can breathe freely and it fits comfortably without constantly having to readjust.

Very light weight and comfortable. ONLY mask I have found yet that does to stick to my mouth and nose when running. Design could be more subtle. Was told I look like a shark, not that there is anything wrong with sharks. Cords are hard to keep even.

LOVE this mask. I wear an N95 all day at work...this mask with a very protective filter is fantastic! It’s comfortable, easy to breath in & doesn’t require double masking due to the high quality filters & great fit around chin & nose. Both my children wear this now that they have returned to school. One of them wears the lighter filter while playing basketball & baseball. I quit wearing all my other masks. High quality, withstands washing & air dry.

Bought it for my son’s track practice. He says it is much easier to breathe than traditional masks. A+++

Simple and brilliant. Seri is the most ingeniously constructed and breathable mask I've tried! A standout among the rest of the common options. This mask is the best I've found. You will also love the adjustability around the face and the simple filter insert. Customer service is excellent. This is the mask I wear anytime I have a public event, when required. Thank you, Serionix.

The structured shape prevents the mask from touching your mouth area so when you need a full breath it will not collapse. The various strap configurations are an advantage depending on activity. Would buy again. Black

Could not get the inner filter to stay in place. Would not recommend to my running friends

I like the way the mask fits and it is quite comfortable but I find the filter doesn't stay in place and is actually a bit too large for the size of the mask. If I wear the mask very long, the filter slips out of place. I also find it hard to tighten and loosen the mask.

I have cycled through several different products from other manufacturers. This mask checked all the boxes. Excellent fit, even with a beard and glasses. Very breathable. Great glasses fog control. Multiple wear configurations. Glad I found you.

This is by far the best mask for athletes! My son is a football player and was having to use his inhaler with his other masks but not anymore. And they look good on :)

This mask is the only one I have been able to comfortably wear at the gym. I am able to breath easily and my glasses do not fog up. I have a small face and fit has been a real issue with other masks.

LOVE working out in this. Easy to breath and doesn't get sucked into your nose or mouth. -but- Soaks a ton of sweat - which is expected, I guess. Maybe a different material would be better? Washed it and shrunk in dryer. Fits a little snug. If you sweat and the filter's wet, you'll need to replace the filter for the next use. Otherwise, it sucks into your face because it loses it's firmness. The replacement filters are too expensive. I can buy a bolt of M13 on Amazon and cut my own, if I want to stick with it.

Definitely more breathable and the inserts make it easy to change

I love how easy they are to breathe through. I have never had one you could adjust to fit the face this well. I have tried at least 8 different types ( I am a nurse) of masks and this is my favorite!

Easily the most breathable mask I own, making running indoors possible again.

My glasses don't fog up, which tells me the fit is good. Love the convenience of being able to take it off and leave it around my neck so I can quickly put it back on. And with a MERV 13 filter I can be confident it's protecting me.

Purchased the mask after doing a lot of research. My goal was to find a decent mask for proper protection while group running. The Serionix mask with it’s multi-layer replaceable filter does the job for me. I’ve used it both in and outdoors with good success. It fits well and is reasonably adjustable. Filters probably need to be replaced ever 3 or so runs depending on how far you’re running and the effort you put out. Ditto for cycling as well.

Probably one of the better masks I've bought. Easy to wear, easy to breathe in and I don't mind wearing it all day if needed.

Excellent mask. Well thought out design. The adjustment cord gives you a good fit around your mouth and chin. I’ve had a lung transplant and this is the best breathable mask by far.

My son (pictured) uses this mask for baseball & basketball with the MERV 13 filters. It’s very comfortable, very breathable & most importantly protects him & who he is around! We love this mask & are very pleased with how well it works for sports! My son wears a small (12 y/o) & as a petite female so do I. So happy to find this mask!!!

Filter not fitting well the mask

The filters separate. The fabric flaps designed to hold the filters in place are inadequate to do so. The filters do not remain in place once positioned properly. I do like the feel and the ease of breathing when everything is in place; however, these times are rare as the filters crumple, and slide out of place.

I love how responsive this team is! When I got the confirmation, the color didn’t line up with with what I ordered. They were quick to assure me that the face cover I was to receive WAS the one I ordered. It’s the best-fitting face cover I have purchased over the last 10 months!

Love this mask, I have gone through many different masks to play hockey and this is by far the best I’ve worn for comfort and being breathable!!! I also love being able to choose the choose an insert..it is now my go to mask... I will be buying another one!

The mask is actually fantastic to run in. Breathes well and comfortable with the clip straps. I have it a 4 out of 5 because it’s hard to figure out how to put the insert in the mask. And then when you do it’s not a good fit so it’s a tad uncomfortable for normal day to day wear. But for athletics it serves its purpose.

Great mask, very comfortable the best I've used.

Great mask easy to wear. Always available since you can where around your neck. Easy to adjust.

Easier to breath with mask on and mask won't stick to your face. Good fit to the face too

There was nothing in the literature that I saw about the washability of the filters. Are they disposable and where do I order more. findinng this information has not been easy and I have not made it priority to get back on your website to do my own searching making your product nearly unuseable.

Great mask, easy to breathe in, stays in place and can be worn a couple different ways.

I love this mask. It provides excellent coverage, while being extremely breathable. The built in lanyard is awesome.

Very pleased with ordering experience. Prompt shipment. Very pleased with the fit and breathability of the mask. Excellent for my workouts.

This supposedly high-tech facemask does not work all that well. The white nano filter falls out of it constantly. I am disappointed with this product that does not live up to the advertising hype.

I now have a drawerful of masks, trying to find the “right one.” These rank near the top because they cover the most facial “real estate,” top to bottom. However, there is no “structure” to keep the mask away from the nose and mouth to aid in breathing. Also, there is a paper filter that, I assume, must be replaced after washing, with no clear way to replace. Best masks I’ve found are available through Staples.

I am a teacher and have been struggling to find the right mask for me. After almost a year I have. These masks offer great comfort, breathability and protection. Buy one you will love it.

Seri is the most ingeniously constructed and breathable mask I've tried! As a performing musician, breathability is a major concern. This mask is the best I've found. You will also love the adjustability around the face and the simple filter insert. Customer service is excellent. This is the mask I wear anytime I have a public event. Thank you, Serionix.

One of the most comfortable masks I've tried!

I feel safe wearing this mask very comfortable help keep glasses from fogging up I would recommend to a friend

Benefits: Being around teh neck and not ears, easy to breathe, feels safe, looks great. Challenges: The filter needs to be cut more to size and adding velcro to keep it in place within the fabric border might help. All in all, our whole family enjoyed the masks!

I feel very safe wearing your mask and that is the main reason it's very comfortable I can breathe good I like the different ways you can wear it and it looks cool

The fit and adjustability are better than any other cloth or disposable surgical mask I've tried. It causes less fatigue than any other mask I've tried.

Believe the hype! If you are tired of being smothered during your workouts,get the Serionix mask! Most products are long on promise and short on performance! That is NOT the case with your mask! Made not only in the USA but in my hometown Urbana!

This is my go-to mask for everyday use. Its comfortable bc its adjustable around the ears. The neck strap in back lets the mask hang loose around my neck so i can take it off my face if I want to without putting it down. The filters are very breathable and doesnt feel hot inside the mask. They are also really easy to switch out for a new filter. I also like supporting a local organization with a great product.

Got mine today and wore it to the gym. Definitely the most breathable mask I have and I’ve tried a few. So breathable you wonder if it works, so fingers crossed. Just ordered more filter inserts. My only criticism is chemical smell that I’ve experienced with a number of masks before washing. Running the mask through the washer and have steam cleaned filter, hope that helps.

I have tried a few athletic face masks and found that my breathing was still limited when sprinting. I tried this mask and I can breathe normally even when training at a high intensity. The mask also does not get wet from my breathing, the way other masks do. I also notice that Merv-13 is the type of filter Andrew Cuomo talked about putting in the HVACs in office buildings to help combat the coronavirus. Awesome.

I love this mask. As other reviewers have noted, it is extremely breathable. I found it remarkably easy to adjust and wear comfortably. I am recommending your mask to all family and friends.

This is a great mask, I have 2 and I purchased one for my wife also.

I love this mask! It's extremely breathable, fits exceptionally well over my nose and under my chin and I never need to adjust it when talking. Highly reocmmend!

I have masks from at least a half dozen makers, and this one is the best constructed of the lot. It's cool and lightweight, and since it doesn't touch my mouth I sometimes forget I have it on. Definitely worth every penny. If I could improve on it in any way, I'd put a longer wire across the top of the mask, running the full width of the face. The ends stop just under my pupils, and it can take a little fiddling to get maximum contact with no gaps. A slightly stiffer wire would also be a bonus, so I wouldn't have to reshape it every time I put the mask back on. Sadly, the extra I bought for my husband is too small for his big head (lol). When it's fastened using the clip at the back, he can't use the hanging strap at the bottom or it smashes his face. It would need about 0.25 to 0.5 inch more fabric on each side and at the bottom, and at least four inches more elastic to make it wearable for him. Still, I really love this mask, especially since it looks like we'll be wearing them for several more months!

Fits great and is much easier to breathe and move in especially when exercising!