Versipack was originally designed for Search and Rescue work, the S-type allows for the additional attachment of the CP-L Radio Holster (#0102) or any other MAXPEDITION accessory pocket in place of the cellphone pocket on the standard Fatboy. In addition, it rides on the left side of the body filling the need for a 'lefty' Fatboy and a grab-and-go gear bag that does not hinder the quick drawing of a sidearm on the right hip.