Review on DERABY Insulated Casserole Containers for Commercial Use by Brenda Wang

I am delivering and only used today so not sure how strong the zip will be BUT everything seems perfect and to be made to last. The interior material isn't the cheap stuff you find in, say, the soft lunch boxes you find at Walmart. This is good stuff. I delivered some pizzas today and I think they were hotter when I gave them to the customer than when I picked them up. I highly recommend this bag for grocery delivery. So glad I did.