• Answer The Nikwax Waterproofing Down Proof can be used on sleeping bags and it will make it somewhat waterproof.|•Adds / renews water repellency and revives breathability|•Maintains insulation, keeping you warm|•Minimises weight gain|1.For sleeping bags immerse item(s) in hand hot water in a bowl or bath tub. |2.Apply by hand, agitate and leave to soak for 5 to 10 minutes. |3.Rinse under running water, drain and gently press the sleeping bag to expel excess water. |4.To dry, and only if care label allows, spin dry 3 times and tumble dry on a high setting until all ‘clumps’ have disappeared. |5.Use clean tennis balls or trainers (that won’t melt) in a clean pillow case to help break up clumps when drying.
    Answered on 2/6/2013 12:00:00 AM by Prod Spec Kevin from Sierra Trading Post