Made of heavy duty, water resistant nylon, these horn bags will hold up under rough conditions. With two pockets on one side and two water bottle sleeves on the other, keep all the essentials on hand during your ride has never been easier. The large pocket is 10" x 8" x 3" and the small pocket is 5" x 6-1/2" x 1-1/2". Both sides have tie down rings to keep them from bouncing. Great trail rider bags.