This boot is technically identical to it's brother Blue Ridge, but with the addition of a protective mid sole and Gore-tex membrane. Again this is a fantastic mid range quality boot offering unbeatable value. It's Gore-tex lining is tested to 300,000 flex cycles in 50mm of water to ensure that they are totally waterproof. Compare this to the specification of any other membrane and you will see why this boot excels over any other in it's price range.