Gore-Tex. For all of the other fabrics in use in the kayak market which claim to be 'as good as Gore-tex' there is no substitute for the real thing. Dry, breathable, comfortable. Add to that lightweight and comfortable to wear for long periods of time and you are on to a real winner. The limited edition suit is a little heavier than the original Gore-tex Meridian suit which I had previously because it has Cordura bottoms. However once it is on, it doesn't feel much heavier and the increased wear around the legs is amazing for jungle portages and sliding around. It increases the time between repairs exponentially. Which brings me to the last and possibly best Pro. Kokatat repair service. I can send my suit back and get new gaskets installed as well as a pressure test and repair the areas which have been damaged. All for a fraction of the cost of replacement.