Nikwax Down Proof

Nikwax Down Proof is a specialty waterproofer formulated to shield down-filled jackets, sleeping bags, and gear from moisture while preserving their natural insulating power. Apply it directly in your washing machine or by hand for convenient, hassle-free protection. Non-flammable and PFAS-free, it keeps your down gear performing at its best in wet and damp conditions without compromising breathability or loft.