Super heavy duty universal amp head/mixer bag. 1" thick dense padding. will unzip to use clamshell style or just unzip the end panel. Metal hardware. Handle and shoulder strap. Lots of interior pockets. Interior measures 12.5 x 12.5 x 3". Exterior pouch measures 11 x 11 x 2". Plenty of room for cables, tuner, power cord, etc. I have used it with Aquilar Tone Hammer 500 and Markbass Littlemark and Markbass F1 heads.