I've been looking for a simple bag without advertising print and with this article also found. For the price of course you can not expect much, but the bag is ... just like sunning, the bags you get at trade shows or exhibitions with advertising imprint. And for this bag would be perfect. Amazingly, who knew and seams are sewn and not just glued. Also the shoulder strap is sewn properly.
I'm amazed that you can for as little money as a decent bag receives and can only recommend the purchase. The material is any plastic. Dimensionally stable and probably reasonably Tearproof, but has a pleasant and at first glance also quite dibasic.