TRAININGMASK Elevation Training Mask 2.0 - for Endurance - Increase Your Sports Performance, Endurance, Weight Lifting, Workout, Running Altitude Mask, Fitness Running, Manufactured in USA

Konnte nicht probieren, ab das Atemsystem richtig funktioniert, es scheint mir aber zu kompliziert.Die Maske war viel zu klein, obwohl ich mich an die Vorgaben des Herstellers gehalten habe.

I wore this on the hardest setting around the house while watching my toddler and doing random chores (running up and down stairs between levels of house) and it wasn't hard to breath in at all. I thought "man, this mask ain't sheet. I hope I didn't waste my money" I finally got the courage to wear it at the gym and holy crap I almost died! I highly recommend the twist valves. I didn't even have it on the hardest setting and I was on the treadmill with the incline at 15 then the speed about 4.7 when I had to open some of the holes. It takes some getting used to but once I got my breathing down I went a little faster but that was a big mistake. I started to take quick short breathes, had to open all holes but still wasn't enough air. At this point I started to panic a little bc I couldn't get my breathing back on track then I couldn't easily grab the velcro to remove the mask while running (this was a me thing not a product issue) so I started to breathe harder and the treadmill on a 15 incline restricted me from just jumping on the sides to stop running and focus on the mask. I was able to pry the bottom of the mask up and off my face to catch my breath. I have used it several more times since then and haven't had any issues. I can actually feel my lungs still expanded for a while after using. I gave 4 stars bc the head strap is tight. I am 5'2 110lb female and ordered the small. The suction is tight and it does hurt the bridge of nose if not sitting correctly.

the instructions were very confusing and not direct but overall the product works very well and has many modes

This mask appears to be made of high quality materials and is comfortable. It has a good tight/snug fit but NOT too tight. Th resistance disks are a little cumbersome but I guess that is why it is labled a 2.0 and not 3.0. Overall I like it.

This was a great buy and would buy again from this seller.