A very useful gig bag, well made and value for money, if a tight fit.
I bought this gig bag for my Thomann 4-valve sousaphone. I've been using it for several months. I couldn't do without it, because transporting the sousaphone in it's original hard case is very difficult!
It's well made. The zips seem robust. Internal pads protect the bell part from the main body. The 2 hand straps allow fairly easy handling, and the back straps allow it to be carried on your back.
It's a tight fit for the instrument, and I have to push all the tuning slides in, and wiggle it a bit to do up the zips, but once it's in and zipped, it is very secure.