Available with or without strap. The generous strap length makes it easy to slip over side view mirrors. Extra-large grommet provides a simple way to hang R.O. Holders on a hook. The corner location of the grommet helps you save space when hanging them up. The grommet is attached throughthe backer so it doesn't interfere as you slip contents in and out. Transparent and Heavy-Duty Backer options are available for holders with black trim.