I have a B&H Imperial Eb tuba (circa 1970's) which has a very heavy hard case, which is nearly as heavy as the tuba. So I needed something more practical for everyday use going to practices. This is a very robust bag which I have used several times now. The tuba is a snug fit inside and it feels well protected, but light enough. I haven't used the shoulder straps yet but they seem well made and strong enough to do the job. Very pleased with this gig bag.