Large Capacity & Extensible Pockets: The bicycle bag has an expandable main pocket, two external pockets to extend the panniers, a water bottle pocket and a top elastic mesh pocket, enough to store daily necessities, bicycle gear and cycling accessories. Waterproof Rain Cover: This bike bag is made of high-quality Oxford cloth material, which is wear-resistant, scratch-resistant, tear-resistant and durable. The inner bottom is filled with a thick foam pad, and the stable structure makes it difficult to deform.The bottom pocket is equipped with a large elastic rain cover to keep the items in your bag dry even in the rain. waterproof. Water Bottle Holder & Taillight Elastic Strap: The bicycle luggage bag has an adjustable elastic drawstring pocket, which can store water bottles or umbrellas, and helps to avoid water bottles falling during bumpy journeys. The elastic strap at the back for attaching rear light. High Reflective & Safe Straps: There are reflective seat belts on the 2 sides and back of the bike rack bag, allowing you to keep riding safely in any weather conditions, day or night, ensuring you're easily seen by others and boosting your safety on the road. Easy to Install & Portable: This bicycle rear seat bag has 2 adjustable velcro straps at the bottom, which can be easily installed and unloaded in a few seconds.The bicycle bag is equipped with a top hand strap and a detachable adjustable shoulder strap for easy carrying. Suitable trunk bag for mountain bikes, road bikes, leisure bikes, ebikes, etc. Size Large Color Black Pattern Solid Brand Name Ogetok Shell Type Soft Strap Type Adjustable Style Name Bicycle Trunk Bag Unit Count 1 Count Handle Type strap Item Weight 0.4 Kilograms Closure Type Zipper Manufacturer Ogetok Material Type Oxford cloth Mounting Type Rack Mount Item Type Name Travel Accessory- Packing Organizer Number of Compartments 5 Compatible with Vehicle Type Bicycle