Advanced microthin polyurethane cuff membrane seals the airway at ultra-low pressure; Microthin material (10 microns) permits a true high volume, low pressure (HVLP) cuff to reduce cuff pressure; MICROCUFF* pediatric tubes effectively seal at an average cuff pressure of 11 cm H20, about half the pressure of conventional tubes; MICROCUFF* pediatric tubes seal below the commonly presumed capillary perfusion pressure of the pediatric population, diminishing the risk to mucosal tissue