<p>The Soft &amp; Comfy O2 nasal cannula is a unique patent-pending antibacterial sleeve that surrounds the plastic cannula tubes. The sleeves provide the user with a soft and comfortable cushion between the plastic cannula tubes and the user's skin which eliminates irritations and abrasion. It also helps keep the nasal prongs from slipping out of the nostrils and reduces inner nasal irritation, providing unparalleled comfort.</p>