GoLite Women's Tumalo Pertex 2.5 Layer Storm Pant 100% nylon 100% nylon Waterproof/breathable, stretchy Pertex nylon for comfortable weather protection Calf zippers for easy on and offMost of our garments can machine dried on Low, but line drying is recommended for longer product life and for overall energy savings. We have designed our apparel to be easy to care for and quick drying. Cold water wash with mild detergent unless otherwise directed. See the garment care label for further clarification. China