These panniers are roomy with a top measurement of 10 1/2" x 23" sloping down to a bottom measurement of 9 1/2" x 23". They are 20" deep. Constructed of strong, durable polyethylene, they weigh only 14 pounds each. "Snap-Lock" ties for top packs plus a special hang strap design make these panniers the pro packer's choice! Available with nylon webbing hangs straps.