Cotton proof works by coating the individual fibres with a flexible water repellent treatment so they can't soak up as much water whilst allowing moisture vapour to pass through. This process reduces weight gain from water ingress and maintains the natural breathability of cotton. Easily applied in a washing machine, which ensures the treatment gets right thorough the fabric. However, if garment care instructions restrict machine use, hand proofing is effective. The Durable Water Repellency (DWR) develops on air drying, there is no need for tumble drying. For used and dirty clothing, we recommend that the garment is first cleaned with Nikwax Tech Wash on a separate cycle, there is no need to dry before re-proofing, just bung in the Cotton Proof and start another wash cycle.
Nikwax waterproofing products are completely environmentally friendly. They are water based, non-aerosol, non-flammable, non-hazardous, contain no harmful solvents or volatile organic compounds and are completely free of flurocarbons.
• Easy to use wash-in waterproofing for all cotton, polycotton, canvas clothing and equipment
• Adds water repellency, revives breathability and reduces water absorbency without tumble
drying
• Enhances the performance of your gear, keeping you warmer and drier
• Recommended for all cotton and polycotton clothing and gear