1、EVA Rubber Polyester Materials: This motorcycle tail bag is made of durable and tear resistant EVA, rubber, and polyester fabric, offering excellent protection for your belongings. 2、Waterproof Design: With a waterproof cover and fully wrapped waterproof zippers, this tail bag allows you to travel with ease even in the rain. The waterproof materials ensure that your items inside the bag remain intact and undamaged, providing long lasting performance. 3、Large Capacity: This motorcycle tail bag features expandable storage space. It can easily accommodate off road helmets, modular helmets, full face helmets, and more. With the capacity ranging from 20L to 24L and expanding up to 28L, it offers a spacious and stylish design to store various items, serving as a versatile luggage option. 4、Easy Installation: Designed with quick release buckles, this bag can be easily installed and detached from your motorcycle. It securely attaches to the passenger seats within minutes using the included adjustable shoulder strap. 5、Multi Functionality: Equipped with shoulder straps, this bag can be easily converted into different functionalities to meet your needs as a helmet bag or backpack. Suitable for motorcycles, electric bikes, off road bikes, cars, heavy duty motorcycles, daily commuting, road trips, and more. Item Type: Motorcycle Tail Bag Material: EVA, rubber, polyester Weight: Approx. 1230g/43.4oz Color: Black Opening Method: Zipper Applicable Type: Motorcycle, electric bike, off road bike, car, heavy duty motorcycles, daily riding, road trip, commuting, etc. Applicable Gender: Neutral, male, female 1 x Motorcycle Tail Bag 1 x Waterproof Cover 2 x Shoulder Strap 5 x Strap