coher Workout Mask Breathing Mask for Men and Women - Adjustable Resistance Levels - Increase Lung Capacity and Endurance - Ideal for Jogging, Sports, Cycling, Fitness

Mask works great, l highly recommend if you want that extra endurance....

Works great

Muy bueno se lo compre a mi hijo para ayudarlo con sus ejercicios

Works really well for training and prep for my scuba classes

I run 2-5 miles daily in this it hold ups , you pay for what you get I’ve had it a few months again still happy the only part I don’t like is when your around 2-3 miles it seems like it starts to become droopy like the fabric starts to wear , overall good product does exactly what you need ! Worth the buy only small critiques

After 2days of using this material I felt my lungs expanding.

The design is extremely unreasonable. The exhaled hot air cannot be promptly expelled and all gathers in the mask, instantly fogging up. If it's an outdoor activity, it might even completely block the view. The ventilation valve has no effect at all, causing a strong feeling of suffocation. Moreover, the discharged humid and hot gas makes the face covered in sweat, resulting in an extremely poor experience. VX: loldingzhi3d

Really great quality

10 /10

Ottimo prodotto pure di qualità

Exactly what I needed to enhance the strength of my lungs. (And looks great)

Ce mask est incroyable et il m'aide à améliorer mes performances plus rapidement

Produkt macht was es soll.