MaterialTerm 71 of 72

Water repellent

DWR finish, water resistant, PFC-free treatment

Surface treatment that makes water bead off the fabric without being absorbed. Not full waterproofing.

Protection from light rainPFC-free = eco choiceNot equivalent to waterproofing
Definition

A water-repellent fabric is treated with a DWR (Durable Water Repellency) finish that makes water bead on the surface without soaking in. Models labelled PFC-free use fluorocarbon-free formulations, avoiding persistent environmental pollutants.

Water repellency is not the same as waterproofing: the fabric resists light splashes and drizzle, but under heavy rain or sustained pressure water will still penetrate. PFCs (perfluorinated compounds) were the industrial DWR standard for their durability and performance, but have been progressively phased out due to their persistence in ecosystems and the human body. Current PFC-free formulations use silicones, biopolymers or waxes and are comparable in performance, with slightly lower durability that is recovered with frequent washing. The treatment does not affect the fabric's printing or embroidery characteristics.