I answered the question once but didn't sign in to send the answer and it didn't like that so will try again. In a nutshell this jacket is NOT... the Pro grade Gore Tex. My daughter asked me the same question about the grade of Gore Tex. She has several Arcteryx jackets and is pretty gear hip to whats going on with gear. Those jackets are in excess of $400 ot $500 and I just cannot justify that amount of money for the fishing jacket. I believe even the orange jacket- the Guide 3 Simms jacket is not Prograde Gore Tex. This jacket is a very thick Gore Tex and I have had probably 8 or more Gore Tex jackets in the last maybe 30 years and this is probably the thickest I can remember including the Arcyteryx jacket- Some of their Beta jackets are very thick but I don't believe they are Pro Grade. Hope this helps.