Nothing flimsy about these bags. The are well-made and sturdy. My only complaint would be the Velcro on the handles can be a bit annoying. Other than that they will do a good job. They are large and hold a lot of groceries.The bags come with one normal and one with foil insulation. The build quality is pretty good. Fabric looks sturdy and durable. There are many other choices out there. I chose this particular one because it has hook & loop fastener. It is very easy to tie on the shopping cart. They are also easy to carry. The handle straps are long enough to go over the shoulders. Highly recommended!Just what i needed abd expected!These grocery bags are very well made. The material is thick and durable. The handles are strong with a Velcro closure keeping them neatly together. There is also a Velcro closure at the top of each bag, designed to keep the bags closed, which helps to secure your groceries inside of each bag.As stated in the title they are large capacity bags, and built strong enough to hold a large amount of groceries - up to 50 pounds. I like the royal blue color, I also appreciate that one of the bags has thermal lining for additional cooling.The cashier processing my last grocery purchase commented on the nice quality and style of these bags, she wanted to know where I got them. I was happy to tell her that they were readily available on Amazon.Big, durable, well made large capacity bags. Set includes 2. One has a vinyl type lining making any spills an easy clean up; the other bag has a silver foil type cold/heat retention lining, also easy to clean. Both have squared bottoms. The sides tend to collapse a bit until filled, but it isn't too big of a hassle. Bags have strong velcro to close the tops and to join the handles together, and velcro tabs on the side for attachment securing.Bags fold flat when not in use. Great for the store, picnics, sporting events, camping, etc. Based on the large capacity alone I'd recommend.This is a nice matching set of bags. only one of them was insulated. I use that one more frequently. The uninsulated bag is handy and strong, but I would rather carry my groceries in a backpack.Both bags are well made and look nice.Highly Recommended!!!This is the first time I am using reusable grocery bags. I am so happy that I don't have to use plastic bags anymore and so happy that each of these bags can take much more than a single plastic bag can take. So, these two bags will probably be enough for almost all of my grocery runs. The material is thick and durable. The bags are insulated so they definitely keep the food fresher than plastic bags. I am very satisfied and I would recommend these.One is a great sized insulated and I love it!!!! The other was a plan bag!!!! I thought by the title both would be insulated