- High-Quality Material: Constructed from durable polyester that is both waterproof and heat-insulating, ensuring your belongings stay dry and protected. Size dimensions: 34cm x 14cm x 19cm (13.39 inches x 5.51 inches x 7.48 inches). - Safe and User-Friendly: Features multiple buckle designs for quick access. Includes a light attachment for evening rides and reflective elements to enhance your visibility in low-light conditions. - Versatile Storage Solutions: Ideal for mountain biking, cycling, and travel. This rear rack bag offers ample storage with various pockets, catering to all your organizing needs. It can be conveniently carried by hand, slung over the shoulder, or mounted directly to your bike. - Secure and Stable Mounting: The four-point positioning system guarantees that the bicycle trunk pannier bag remains stable throughout your ride, eliminating any shaking or wobbling that could distract or hinder performance. This Bike Rear Rack Bag is designed for those who prioritize functionality, safety, and convenience on their cycling adventures. Keep your essentials secure and accessible, whether you're commuting, touring, or hitting the trails.