THE FABRIC in the Extreme 1600 Pants is a heavy cotton canvas base material (7.7 oz. per yard), coated with a specially formulated PVC (10.3) oz. per yard) for a total weight of 18 oz. per yard. The PVC coating on both the Extreme Parka and the Extreme Pants is specially designed to resist oils and to maintain flexibility in extremely cold temperatures.Applications: All Commercial Fishing, Building and Road Construction, Timber Harvest, Agriculture, Mining, Shipyards, Forestry, Utilities.Features: Sacrificial layers made of a woven nylon base fabric which has PVC applied to both sides; it is light-weight, very strong, and will not mildew. This material is remarkable for its durability, flexibility at low temperatures (-30º F), and its resistance to mineral/animal oils and grease. If torn, the fabric underneath is unaffected. From the top of the bib to below the knees there is a double sacrificial layer of material. From the top of the bib to below the waist is a triple layer of material right where it is needed most. These bibs are cut much higher up the chest. Adjustable suspenders are the new speed-clip type. The hem is reinforced with heavy nylon webbing.