Our Waterproof Fleece is a proprietary laminate fabric with over 15 years in development and testing. We have achieved the “Perfect Weight” fabric that is Quiet, Waterproof/Windproof/Breathable , Extremely Warm and Virtually Indestructable. The fabric also has “stretch” for superior fit and comfort, yet ,will never lose its “Waterproofing” even after repeated machine wash and dry. The core of the fabric is ArgoFlex .6 mil “Stretchable” Waterproof film, sandwiched between REALTREE AP 350 gram exterior Fleece with POLARTEC’S 4 0z/sq. Micro fleece on the inside. The end result is a Superior fabric that will always perform.