Roland JC-40 Cover

Perfectly fits the amp it was designed for, but I'm afraid it would hardly help protect the amp if it rubs off something or gets a bit rougher bump in transport. I kind of expected the fabric to be thicker, even lightly padded, so you're better off looking for something else if that's what you need. In any case, it will protect your JC from dust, but if you don't care having a protective cover with a matching logo for your amp, there are probably better options out there.

a bit overpriced for what is essentially a piece of fabric, but it does what it is designed to do.

Had to change my old vinyl cover. This fits my JC-77 perfectly.

Keeps the rain off OK
Fits good.
Looks good.
It's very durable for sure.
No padding, but that's OK.
Right price.