Nikwax Waterproof Tech Wash is the No.1 easy to use, safe, high performance cleaner for wet weather clothing and equipment. Breathable waterproof garments are most likely to get sweaty and wet inside when used in damp or wet conditions. If the outer fabric absorbs water, the garment can lose up to 70% of its breathability. Therefore, the Durable Water Repellency (DWR) on the outer fabric of your jacket must be maintained to ensure comfort. Nikwax Tech Wash will revitalize the DWR and therefore breathability of your garment. Nikwax Tech Wash is the market leader; it has been specifically designed and optimized for breathable waterproof fabrics. Nikwax Tech Wash is a highly effective cleaner. Additionally it will revitalize existing Durable Water Repellency (DWR) and revive breathability. It is the safe way to thoroughly clean your waterproof clothing and equipment. Application in a washing machine is quick, easy, and ensures that the whole garment is thoroughly cleaned.