If kept in a cool, dark and dry place they will last 10 to 12 years, most likely more. I just replaced a pair of Simms Guide waders that I had had for 16 years and although they had a few repairs (dabs or Aqua Seal) I used those waders 30 days a year approximately for the fires 10 years and 50 days a year for the last 5 years of their life.
If you bust brush with them expect to have to do minor repairs on them.
