Permanent waterproof coating on flies, materials, dubbing, yarns,nylon leaders, braided loops and flylines. Does not effect color or softness of material nor does it leave oil rings of any kind on the water surface. Floatability is not effected in ant way by fish or weed slime. Water Shed is a pre-fishing treatment and must be applied at least 24 hours prior tofishing. Do not apply over wet material or Water Shed will not cure. and waterproof properly. Vendor: Hareline Dubbing