OXYFIT™ Breath Trainer Device - Cardio Edition

This the first time I've used a breath trainer like this and I gotta say I enjoy the effect it's had on my breathing during training. I don't feel like I'm out of breath as often working out. Heart rate also seems to stay steadier while training.

Instructions but minimal but not rocket science. Would be nice if there was a second mouthpiece for hygiene

It's a great fit with comfortable restrictions for breathing. Lovely product