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

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.

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.

Mask works alright, I must have an odd face though, as it's tough to get good seal unless I have it seated higher with my chin nearly peaking out. Build quality seems good though, inner face sealing but would probably be 100x better with a softer durometer rubber/plastic.

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.

It’s incredible what this thing does to improve stamina.

This looks to be an extremely well made product and easily worth 5 stars, however I am knocking 2 full stars off for just how wildly misleading the colors in the images are. I chose the red camo which showed vibrant mostly red design in the photo, in person the red is easily the least prominent of the 3 colors and is so orange and muddy that it is almost imperceptible. Great product, terrible photos. Should have gone with black.

great training aide

The mask is way too small for my face, I can't get a good seal at all. (I am 5"10" 230lbs, so i'm not some 6"8" giant"). Also the material the face seal is made out of is kind of hard and uncomfortable, and also does not seal well. I think a soft silicone material would seal a lot better.