Performance Repel Plus is a PFC-Free durable water repellant forumulated to restore the DWR finish of all technical fabrics. Spray on application. Based on industry recognised testing, this improved formualtion delivers greater water repellency to provide better protection for clothing. It does not affect the breathability of membrane fabrics and therefore is also suitable for Gore-Tex® linings. Must be applied to a clean, damp garment for maximum performance.