Long Shot Precision has created a bag that can be used on any surface. Designed for the Military / Hunting / PRS. It has a side that grips (bottom is felt) and a side that allows smooth consistent sliding of the ABR rider. The height of the small bag when settled is about 2.25 and it will not interfere with finger access to the thumb wheel. The bag can be stood on the end to provide about 3. A thick nylon loop is provided. Dimension 3.5 x 3.5. Made in the USA. Options : Small - Lite Weight Fill - about 13 oz