Abstract: A device especially suitable for, but not limited to, anchoring a baby bottle to a harness, and comprising an elongate flexible element having an eye with an eyehole at one end and a resiliently flexible retaining ring of larger diameter than the eyehole, the ring being adapted to encircle a portion of the flexible element and being compressible to small enough elongated dimension to pass through the eyehole to draw the encircled portion as a loop through the eyehole and then expand whereby to couple the ring to the flexible element, the eye engaging as a locking collar about the flexible element adjacent to the loop to substantially lock the ring against escape from the loop.The device may comprise a baby bottle harness, and is especially well adapted for quick change to accommodate retaining of objects such as baby bottles of different sizes.