Hook and loop, commonly referred to as Velcro, which is a brand name. This is hook and loop with an adheasive back that is 2" wide by as long as you like. Loop usually goes on the pedalboard and hook on the back of your pedal or power supply. Black - the color of rock-n-roll! • MFSKU 20BKPH/L • UPC 20BKPH/L