Great, but I hope there was even bigger model for 80 liter kettle
I was impressed with this brew bag. The top and bottom are strong and preserve the cylinder shape very well. It was much nicer when mashing in since you didn't have the loose nylon getting in the way. You can't make this bag any narrower, so make sure your kettle is wide enough or it won't go in! I also had a problem where my kettle was taller than the bag, so it was a bit of a challenge to keep the top rim of the bag out of the water so the grains didn't flow over. I'm sure this can be solved with some practice. The bag also cleans up nicely - much easier than traditional bags. I can't comment as to how robust it is, but it certainly seemed strong enough on my first brew day, and with proper care I can see it lasting a long time. I'm convinced and will use this type of bag for my brews in the future.