What is disclosed is an attachment for a portable media device that case that is configured for attachment to a flexible strap. An end of the flexible strap is configured to slide along the attachment in a track to form an adjustable loop. A plurality of straps can be provided to allow a user to vary the color and/or shape of the strap. What is further disclosed is a portable media case having the track integral with the case. The case is configured to provide protection to a mobile device, including but not limited to a mobile phone. The case with flexible strap forming a loop provides a mechanism to secure a mobile device in the hand of a user or to mount the device. Alternatively the attachment can be formed as an insert into an opening in a case such that the insert and strap are removable from the case.