The Stratus Heli-XT provides passive noise reduction of greater than 29dB and active noise reduction (ANR) of up to 16dB. Detented slide adjustment on headband allows ear cup to be easily raised or lowered for proper fit. Yoke design allows ear cup to pivot in two planes assuring proper seal to head and distributing ear cushion pressure evenly over its entire surface. Ear cup pressure is adjustable thanks to patented ComfortCam technology. 1-inch thick ear cushions made from heat sensitive slow recovery foam conform to wearer's head to provide a perfect seal and eliminate pressure points.