Kokatat makes this in goretex pack light, and tropos materials. The goretex is a lot more money, and I actually prefer the tropos. The pack light material I have in my other gear will absorb water on the outside and give a noticeable evaporative cooling effect. Water just rolls off the tropos material, and it is still breathable. Tropos is probably not as breathable as Goretex under ideal circumstances, but considering what you use this item for I do not think its so important or a factor at all. I think the goretex will not breath very well if at all when it is soaked. The tropos material used on this cag will not get soaked. The water just rolls off. The one size fits all factor is handy. I highly recommend this if you paddle in cold weather.