Miller Aircore Harnesses with aluminum components provides the ultimate in performance and comfort. Aluminum harnesses are 20% lighter than harnesses with steel hardware, leading to reduced fatigue and increased productivity. Corrosion-resistant aluminum hardware also lasts longer, reducing replacement costs. Breathable, open-core padding technology provides optimal air flow, while reducing heat and moisture entrapment, keeping the worker drier and cooler. DuraFlex stretchable webbing provides greater flexibility and increased comfort. Unique cam buckles on the shoulder straps make vertical webbing adjustment the easiest of any harness on the market. Universally sized to fit most waists from 36"" - 52""