These were originally designed for Saddlebag placement, however, they are being placed on handlebars, sissy bars, roll bars...wherever the ingenious biker puts it! Holders can be customized for the placement of choice. Velcro is standard for the handlebar placement. If you have a "theme" we have added studs, spikes, grommets, skulls, embossing/stamping ...ect..... The standard strap width for the Saddlebag placement is 1 1/2 inches.. but if you need a different size please indicate this. Adjustable is for 16 oz - 20 oz various brand water bottles. We also have liter sizes.