My "regular" kilt is a 6 yard from Geoffrey in Edinburgh. The material is their Auld Reekie tartan and they tell me that it is coated with teflon, which makes it semi-waterproof. I have tried this out and the kilt never seems to get wet through. I sit in the car and on trains for 3-4 hours in this kilt and it hardly creases. I can recommend this one for bad weather.