My Campdraft Deluxe is now nearly 3 years old and it has been on my head almost every day having its fair share of abuse, sweat and rain. The hat has not shrinked at all and I must use just as much badding in it as when it was new. My CD has very thick sweat band, much thicker than my new Fed IV Deluxe. It will be interesting to see, if the thinner sweat band of my Fed IV will shrink more. Both sweat bands are extremely high quality, just different in thickness.