each of its three layers performs a different role

It comes with a filter and has soft cloth on the back of the pouch for patient comfort

hyperornithinemia

Assura® One-Piece offers a spiral-structure adhesive providing optimal adhesion and superior skin protection

enabling ease of use by patients with dexterity issues

Percent O2 Lock Air Entrainment w/7' Tubing Pouching System Deodorants each of its three layersSalter Labs Percent O2 Lock Air Entrainment System, with 7Ft Oxygen Supply Tube and Humidity Cup Without MaskA transparent, air entrainment, elongated mask with soft anatomical under the chin shape. A rotating sleeve air entrainment valve allows you to dial in seven different oxygen concentrations: 24, 26, 28, 31, 35, 40 or 50%. Aluminum nose clip aids in a positive fit for appropriate oxygen % delivery. Over the ear or elastic head strap styles.