Sparthos High Altitude Mask - Simulate High Altitudes - for Gym, Cardio, Fitness, Running, Endurance and HIIT Training [16 Breathing Levels]

Mask quality is overall very good.Upon opening there is a little bit of a bad chemical smell, but I just let it sit out for a day or two and it dissipated on its own.I did have some minor issues with the mask regarding the extra valves, and customer service from Sparthos was quick to respond and resolve my issue very quickly beyond my satisfaction.I recommend the company as highly as I recommend the mask.

This mask seams very well made. It did have a strong chemical odor when I first opened the package and it took a week to air out nicely. It has a screen like filter that works well at keeping flying insects out of your airway, when you are out exercising and breathing hard. I snowmobile in the mountains above 10,000' elevation and breathing is a real chore. I live at 1,200', so with this mask I get to practice for when I do go up to high altitudes. A few points on high altitude. With less air to breath, you have to breath deeper and more deliberately than you do closer to sea level. You have to do all of your activities slower or with less severity, or you tire out very quickly. This mask cuts down on your air intake, and so does a good job of getting you use to having less air to breath. At altitude air still has 20+ percent oxygen, but you take in less air with each breath. You need to acclimate yourself to the higher altitude with increased, more deliberate breathing, and this mask is excellent for that.

I’ve been using this training mask during my cardio and cycling workouts for the past month, about three to four times a week. I’m pretty familiar with this type of gear, and overall, it’s done a solid job to date.The adjustable resistance levels make it easy to scale intensity. I could change settings mid-session without stopping, which helped keep things flowing. The mask fits securely and doesn’t slip while I’m moving around, and it’s comfortable enough, even during longer workouts. That said, I’ve used a couple other masks that felt a bit more snug or better-built. This one isn’t far off, just not quite at that level.I started to notice better breath control after a few sessions, and I don’t tire out as quickly on regular runs. It’s also easy to wipe down and keep clean. If I could rate it 4.5 stars, I would. It’s a great option if you’re looking to push your breathing a little harder during training. If you’ve tried other masks before, you might feel the difference, but for most, this one will do the job well.

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.

Great mask. Tight fit. Settings for starters to experts.

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

The quality is there, this mask is well constructed. Keeping things succinct, I have found this mask to make breathing during workouts “fun”. Specifically, it helps slow my exhale, and that is right now paying dividends. I’m on the second to lowest level, and intended to take it slow from the get go. What I have done, that was initially unexpected, was to expand its use beyond weight training to include my HIIT and even my Yoga/stretching. It’s not the least bit painful, nor is my breathing labored. What it does do is make me “think” about my breathing like never before.

Product simulates breathing through a straw and does NOT simulate altitude. Benefits and claims of this mask, and others like it, are not backed by scientific evidence. Waste of money