Need help IDing who makes a plastic mesh bags like thing to clean acrilic tank

I picked up a few of these mesh like bags from a LFS. They work amazing to clean acrylic tanks, even removes coralline algae with a breeze. they stand up and don't shed over time. truly an awesome product and its by far the best thing I have ever used to clean my acrylic tank.

The problem is the LFS has closed and there is no name on them and I have no idea who makes them or where to get a replacement(they developed little holes over the past year or so).


Anyone have any idea who makes them or what they are called? I will upload picture of one when I get home tonight.