TwisterFelt Hat ProtectorSpray Can5.5 OZOnly to be used on Colorfast Hats01046 Twister Felt Hat Rain and Stain Protector is specifically for use on felt and beaver hats. It will keep you felt hat water-repellent. This product can be safely used on colorfast hats. Please test on small hidden area to avoid discoloration. Please follow directs for proper use.