I am an Orvis guarantee man, bought a pair of their top of the range with side zips a few years back,the moment I see any problem,ie felt coming away from the sole or studs coming loose they are back to the store ,on my 3rd pair now .
Dont think they are very well made, but they fit me well ,and gripp like glue on the slippery rocks we have on the upper Wye !
Same thing with waders ,bought a mid priced pair and am now upgraded to top of therange all for one initial outlay,first sign of leaks back they go!Latest pair are now 18 months in and get some wear,including my new toy float tubing.