I've had my bag about 4 years now. The bottom corners blew out on it within the first year which is really the main flaw with this style. After three years the vinyl inside started to disintegrate. I do wear it nearly every day and walk literally miles with it everyday and I don't plan on replacing it anytime soon. Just be aware that if you carry heavy books in it daily that the corners with fray and the "waterproof" will dissapear with age. It ages into a nice weathered look which I happen to like.