A sports harness for releasably securing a device such as a portable radio/cassette player device to a wearer, includes an adjustable chest strap, first and second adjustable shoulder straps and first and second adjustable retainer straps. The chest strap has first and second ends for releasably securing the device around the wearer's chest. The first and second shoulder straps each have first and second ends attached to the chest strap so that the first and second shoulder straps are adapted to extend over the wearer's shoulders. The first and second adjustable retainer straps each have first and second ends for releasably retaining the device. The first retainer strap is attached longitudinally to the chest strap and the second retainer strap is attached vertically to the chest strap such that the first and second retainer straps define a substantially rectangular, adjustable space for retaining the device.