I am always amused when somebody boasts their Mountaingoat LTD MK IV dayglo fuschia, 5th generation Go Texas( rolls up into a ball you can fit into the pocket of the other clothing you didn't bring because of wieght) has lasted 5 years. Invariably these garments have ben used at best a few dozen times while my Filson one tonne wool cruiser jacket is pushing 30 years of near daily use. I bought my first Wiggy on the advise of the late Chris Janowskie, who did in fact submerge a bag into water and climb inside. Chris lived in Alaska. I never figured out what all the fuss was over an ounce here and there in my gear. If it gets to heavy I just reduce the bottles of Champagne in my BOB. There is a grainy, black and white photo of Klondikers climbing the Chilkoot Trail.I've climbed that pass, in wonder at people who lugged the required TONNES of food and supplies to the top.I bet they would have loved a Wiggies. Can they wear out? Of course they will, eventually. But by the time one does, most of Jerry's detractors have gone out of business.