WME says about the Waterproof Anchor Extra Cotton 1ltr
A very effective impregnation product in a handy spray. The best impregnant to render cotton and linnen fabrics water resistant. Suitable for tents, awnings, umbrellas, tarpaulins, clothing etc. This impregnant is non toxic and biodegradable. Suitable for water proofing tents for 5 to 10 years. Use: app. 10m² per litre.