This product is made of material for durable and long lasting use. Durable material, better shape and better protection. Zipper pocket easy to open or close. Enough space for the necessary items such as mobile phones, keys, glasses, repair tools, cigarettes, lighters and other scattered small items. Features - Color: Black. - Material: 600D Oxford cloth. - Size: About 15.00X8.00X8.00cm/5.89X3.14X3.14inch. - The bike backseat bag is made of premium material for durable and long lasting use. - Easy to storage and classify your belongings, will not rub your hand when you take out your stuff. - The bike bag is better shape and better protection. Zipper pocket easy to open or close. - The bike package has enough space for the necessary items such as mobile phones, keys, glasses, repair tools, cigarettes, lighters and other scattered small items. - Bike backseat bag design for quick release installation, suitable for a variety of mountain bike.