Nikwax Cotton Proof 300ml

The easy to use, safe, high performance, wash in waterproofing for cotton, polycotton and canvas.

Adds Durable Water Repellency; reducing weight gain and maintaining the breathability of cotton, polycotton and canvas, in wet weather.


Nikwax Cotton Proof™ has been specifically designed and optimised for breathable cotton, polycotton and canvas materials; it leaves a flexible water repellent treatment on individual fibres allowing moisture vapour to pass through, maintaining breathability, prolonging the life of gear and optimising performance in wet weather.


Nikwax Cotton Proof™ is easy and quick to apply in a washing machine and ensures that the treatment goes right through the garment. The highly Durable Water Repellency (DWR) of Nikwax Cotton Proof™ develops on air drying. Therefore the need for tumble drying is removed, saving energy.



High performance waterproofer designed to enhance the performance of wet weather cotton and polycotton items. Easy to use in the washing machine or by hand, non flammable and PFAS free.

For waterproofing cotton.
  • Easy to use wash-in waterproofing for all cotton, polycotton, canvas clothing and equipment
  • Adds water repellency, revives breathability and reduces water absorbency
  • Enhances the performance of your gear, keeping you warmer and drier
  • Recommended for all cotton and polycotton clothing and gear