Some forum watchers may have noticed these were the prize in a recent caption competition. I won them and can now give a quick review after one round trip in Dan yr Ogof. Their waterproof nature is irrelevant in a cave such as this of course but I found them comfortable to wear, easy to get on and most importantly their grip seems to be as good as the Five tens I had. How tough they are remains to be seen but there was no scuffing or external damage after the first trip which was encouranging.