The Yamaha THR series is amazing, opening up a world of practice and small gigs with its crystal clear sound and genuine portability, so a bag for this small wonder is essential. I take my THR10 to open mike gigs (as a pre-amp), and to friends' houses (as a surprisingly powerful little amp), and the bag is perfect for protection and easy of carrying. Good points: easy to carry, reassuringly protective and not expensive. Bad points: none I can see. My THR10 is used with my electroacoustic guitars, so the helpful outside pockets contain cables, spare strings, and biscuits.