Nikwax Cotton Proof 1 L is a top-tier waterproofer crafted to boost the performance of cotton and polycotton items in wet conditions. The product is easy to apply, whether in a washing machine or by hand, and is non-flammable and free from PFAS. Designed for waterproofing cotton, it enhances water repellency, breathability, and reduces water absorption, making your gear more effective in keeping you comfortable. Ideal for jackets, rucksacks, tents, and trousers, it is a reliable choice for outdoor enthusiasts seeking durable protection. High-performance waterproofer for cotton and polycotton Simple application by hand or machine Non-flammable and PFAS free Boosts water repellency and breathability Suitable for various outdoor gear and clothing