Specialty waterproofer designed to protect the insulating properties of down-filled gear from wet and damp conditions. Easy to use in the washing machine or by hand, non flammable and PFC free.For waterproofing downEasy to use wash-in waterproofing for all down clothing and sleeping bags.Adds water repellency and revitalizes insulation.Enhances the performance of your down gear, keeping you warmer and drier.Recommended for Nikwax Hydrophobic Down, Hydrodownand all other down clothing and sleeping bags.