1. MATERIAL Rear bike bag made of high-density waterproof nylon fabric, stylish and classic design, it can cope with most road conditions, it has high abrasion resistance, high tear resistance and durability. In addition, the inside of the bag has a rubber coating, which can well protect your property. 2. LARGE CAPACITY 15 liters on one side, about 30L on both sides, easy to carry all your essentials on the go, independent departments and large pocket. Two side packs allow you to put as many items as possible, which provides you with enough space. There are 1 mesh pockets on the outermost layer on both sides for easy access. 3. QUICK INSTALLATION AND RELEASE The saddle bag comes with adjustable snaps to attach the bag to your bike luggage. No need to install tools, fits all bikes with rear seat, complete the installation quickly, can be removed at any time for easy carrying. Wide double gray reflective strip, ensure safe riding at night. 4. LIGHTWEIGHT Double bike bag trapezoidal design reduces bulk and increases the capacity of the bike bag. The easy-to-clean rear fender prevents the bag from getting dirty with mud or the bag from entering the vehicle wheel at the same time. 5. MULTI-PURPOSE This double bike pannier bag is perfect for short and long trips and excursions; The bike rack pack will also be a good bike gift for your child to go to school, goodbye backpack and don't let the weight overwhelm your child's shoulder. Good quality product