Bought it for my BOSS RC-600 as it had no official or third-party bags at the time, fits great, nice and snug, not flopping around inside the bag. Really well made product, the padding is nice and thick, the quality of stitches and zippers is alright. Appreciate the additional shoulder strap, and the two little pockets and the large side-pocket is very convenient. Works well for carrying other equipment and various cables and bits too. Very good value for the money.