Sparthos High Altitude Mask - Simulate High Altitudes - for Gym Cardio Fitness Running Endurance and HIIT Training

Just got back from 5 miles of roadwork. This product is legit. As soon as I took it off, I noticed my lung capacity increased. I feel amazing and after the first use of this product, I can already tell you this is absolutely worth it especially for the price. The size is fine I have a big nose though so it kinda is annoying pressure absolutely amazing mask it’s kind of hard to believe how they can sell something so good for so cheap. I appreciate companies like this. Not to mention how beautiful the Boxing and the case is. Very impressive design! If there is any product out there, that’s beneficial for the people at a good price. This is at the top of the charts. Read more

Sensational. Comfortable, easy to use, &adjust. Read more

Works well, super comftorable, I just wish it was tougher to breath through, I can put it on the hardest difficulty while I sleep and its not too bad Read more

I’ve been using this mask on runs consistently for the last month and I’ve felt a noticeable strengthening in my lungs. I live about 500 feet higher than sea level and I am training for a marathon in Denver, Colorado (mile high city). The mask is easy to clean and use. I’ve worn it on 2 hour runs comfortably. I’ve progressed in resistance since the start. Only problem is I have a small face and head so the straps do slide around and can cause the mask to loosen a bit while in use. Because of this, it is hard to judge if I am getting the full benefit of the product, but it is better than nothing at all. Read more

Comfortable, with lots of adjustments. I like that you can restrict both the inhale and exhale independently. I also like that it disassembles for cleaning. I think I'd let the strap air dry instead of tossing it in the dryer to preserve the elastic. Easy to take apart and reassemble too. One thing to consider is that this does take up a bit of space on your face, in particular in the nose area. The result is that if you need to wear glasses while you exercise, there may be fit issues. Otherwise this is effective and well thought out and built. 2 thumbs up here! Read more

It can help restrict air flow to aid maintaining a higher heart rate. On the higher levels, practically impossible to breathe in. Read more

Due to everything going on in the world right now, the gym is no longer an option for me and I'm doing more outdoor running. I'm a pretty avid runner, and training masks have always intrigued me. Also, strengthening your lungs and overall endurance is probably a good thing these days. So, I finally decided to pull the trigger on this one based on pretty decent reviews. All I can say is wow, I'm very happy with the purchase. I'm not going to lie, part of me wondered if these masks were a tad on the gimmicky side. I can tell you this one is not. It amps up your workout. It will probably take most people some time getting used to it, but it really pushes you. The intensity of your breathing is very elevated. It's pretty comfortable and adjustable. It has two dials which adjust the resistance. I had to start low, and I run a lot! The dials basically adjust the airflow going in and out. The price is good too compared to others in the market. Overall, I'm very happy with this purchase. It's a good, quality product. I feel like I'm going to have a great summer of running and health. This is a definite recommend from me. Read more

Very useful, I use it in all my runs and my breathing has never been better. You feel a bit dizzy after using it for a while but besides that if you take it off every 30 minutes or so it helps negate that weird dizzy feeling Read more