This Aero Medium Expandable Motorcycle Sissy Bar Bag is made from extremely durable and waterproof Viking leather. The bag provides 1312 cubic inches of storage, it fits most sissy bars, luggage racks, or backrests, perfect for your daily rides. The mounting system is universal [please watch the installation guide below], installation is quick with adjustable Velcro mounting system and quick release buckles guarantee a secure mount. The bag also has reflective design which gives you more visibility on the road. The bag is fully accessible while mounted and its clean appearance matches your motorcycle seat, saddlebags, and riding apparel. This bag includes a detachable full-size roll bag with a shoulder strap and top carrying handle. The internal mesh pocket for extra storage and organization and the included rain cover will keep your bag dry under rainy weather. If you are not satisfied with your purchase we will be more than happy to offer a full refund of the purchase price within 30 days, we know that it is very important for any bikers out there.