You pay a pretty penny for your durable water-repellent-treated performance outerwear because you trust in its effectiveness while out on the trail. Over time, the pores of technical fabrics get clogged by dirt, reducing its maximum effectiveness. The nondetergent, biodegradable cleaner removes dirt and contaminants to enhance your fabric's durable water-repellent finish. Waterproofing treatment lasts twice as long than if you used regular detergent since detergent leaves behind a performance-inhibiting residue. Use on fabrics, fleece or synthetic insulation. 10-fl.-oz. bottle.