I gave them 5 stars for durability, but really haven't had them long enough to tell for sure. They are heavy duty, well made, and seem to be made to last. Overall, I think that they are nice, strong bags, and should last a long time.These are awesome. I've put some heavy groceries in here and they held up. The artwork on the outside definitely let's others know your passion for the team.love love love!!! Go GiantsThese bags are very sturdy and can be used for more than just grocery shopping, I also get a lot of compliments on the bags. Totally worth the buy. :)Strong material for groceriesI used them as gift bags for birthdays and Christmas, they are perfect!Fun bags I use when out shopping .. gave a couple away as gifts .. person that received them loved themWould even make great gift bags! I keep them in my car and use for shopping. Good for the environment