First off, let me say wow! These bags are awesome! Now, I have used a few different types of laundry bags; some I liked and some I didn't really like but I put up with them. But let me tell you... I didn't know what I was missing! These bags are thicker than any bag I’ve used and seem to be very well made. I got the set of 7 so I would have a bag for anything and everything I needed and now I do! There are two bra bags. One is slightly larger than the other, but both are big enough to put a couple bras in. They have these plastic circle things on the ends that allow the bag to keep a shape and not squash or deform what you have in there! I washed my bra and it came out completely normal!!! Never has this happened before! There are then two small, rectangular bags. I would say these are slightly bigger than any bag I have used before - and these are the small ones! Then there are two medium sized ones. You could throw a few delicate shirts in those! And then there is the big dog! It is big! I have a few pair of sweatpants that I must wash in a laundry bag because no matter how many times I tie the strings, they get caught in everything. So normally, I must smush them into a teeny tiny bag and hope that they get clean. Then I must throw them in the dryer in the same tiny bag because the strings get caught in the drum of my dryer... And it takes forever for them to dry. But not anymore!! I threw my sweatpants into the big bag and there was room to spare! They came out of the dryer completely dry at the same time as everything else! I noticed the zippers also seem very well made. The one thing I did notice is that a few of the zippers moved slightly to open the bag ever so much but not even close at all that I would think anything would fall out. So, all in all, these are awesome bags and I definitely recommend them!P.S. I uploaded a few pictures. It's hard to tell how big they are so I compared with a Kleenex box! I also included a picture that has one of my previous laundry bags and one of these new ones as well. You can clearly see the new one behind the old one because of how thick and nice it is!Edit: I have now been using these bags for over two years and every single one of them is still in fantastic shape! They are clearly very durable!