Percent O2 Lock Air Entrainment W/7' Tubing - Case of 50

I can't believe how much easier this mask has made my breathing exercises. The clarity of the transparent mask is helpful, and the adjustable head strap fits perfectly. Highly recommend!

I’m impressed with the durability of this mask and its tubing. The crush-resistant channels make all the difference in my daily use. Best purchase I’ve made for my therapy!

Great mask! It provides the right amount of oxygen and the lock mechanism is very reliable. The comfort of the under-the-chin design really sets this apart from others.

This mask has transformed my oxygen therapy. The design fits well without causing irritation, and the variable settings let me customize my experience easily. Highly satisfied!

I was looking for a mask that wouldn’t slip during use, and this one delivers. The adjustable strap is very comfortable, and the humidifier cup is an excellent addition!