High performance waterproofer designed to enhance performance and revitalize breathability of softshell garments. Easy to apply by hand, non flammable, PFC and aerosol free. Breathable softshell 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 softshell jacket must be maintained to ensure comfort. It will eventually wear off and need to be renewed with Nikwax SoftShell Proof™.