Tend to favor "Web Wing" which is just polypropylene I suspect (no different than Congo Hair), and "Hi Viz" which is a much shinier product in a variety of colors. Neither become transparent when wet. I am curious what product you are using oldster that led you to this conclusion.

It should be said, I only use synthetics for parachutes. Thorax ties like the Royal Wulff still get calf tail wings. I just like the look better.