Abstract: An attachment for an apparel strap such as a strap on a handbag, a backpack, a visor, a headband, or a size-adjustable baseball style sports cap which has a dome and adjustment strap or straps at the rear of the cap for adjustment of the size of the cap. The attachment has a badge member with a display surface and a rear surface on which a clasp member is fixed. The clasp member includes first and second elements which are separated by an elongate gap through which the adjustment strap may be maneuvered to place the strap between the clasp elements and the rear of the badge member so that the badge member is secured to the adjustment strap such that the display surface of the badge may be observed by a person in the presence of the wearer of the cap or other apparel.