The Porta Brace HB-A1 Audio Shoulder Strap is a medium size shoulder strap made of a Memory Foam fill, which conforms to the contours of your shoulder for unmatched comfort. Special attachments (loops, "D" rings and head phone cinch) help you organize head phones, microphone with cube transmitter, cable and boom pole. There is a zipper pocket on the straps wide body large enough to hold your iPod, wireless transmitter, 9V and AA batteries, or cell phone.