Miller AirCore Universal Harness with Tongue BucklesBreathable Padding The breathable padding of the Miller AirCore Universal Harness covers less surface area than other harnesses to provide increased airflow, which reduces heat and moisture build up. Ergonomic Design The AirCore harness has a contoured ergonomic design that minimizes contact around a worker's neck, lower back, and inner thighs to reduce chafing. Stretchable Webbing The stretchable webbing on this harness provides greater flexibility