Adds Durable Water Repellency; reducing weight gain and maintaining the breathability of cotton, polycotton and canvas, in wet weather.
Cotton is a natural fibre; as such, it is renewable, biodegradable and can be produced organically. It is highly versatile and can be used to produce many fabrics, each with different properties. Additionally, cotton can be blended with synthetic fibres, such as polyester, to combine the desirable properties of both materials.
Cotton fabrics are breathable, absorbent and strong. They are used in the manufacture of clothing and outdoor equipment, but are not inherently water repellent.
Your cotton items could be soaking up water just because they are dirty. First, try cleaning them with Nikwax Tech Wash®, and if they are fairly new, or recently re-waterproofed, the Durable Water Repellency (DWR) will be revitalised just from cleaning. But once items have been thoroughly used, you will need to add DWR using Nikwax Cotton Proof™, after cleaning first with Nikwax Tech Wash®.