Pros: The bags are lightweight and easy to clean. If they get dirty, I just rinse them with hot water and set them to dry on my dish rack. I've not noticed any additional weight to be added by the bags, if any is added, it's a tiny fraction of an ounce. These bags have held up well. I use them for any produce that you'd but in a bag, including onions and potatoes like you see above. I even use them to store some produce in the party.
Cons: Really the only negative that I recall from the entire transaction, (and I really hesitate to call it a negative) is that it took a long time to get my order. Now this wasn't the shop owner's fault. Anyone who has ever purchased anything internationally knows that delivery time for international shipments is a guessing game. The owner did ship the item quickly, so once again, I hesitate to even call it a downfall.
Overall, I love these bags. I use them every time we go shopping and plan to buy more in the future.