[Durable Material]-- In addition to waterproofing, the stronger bike bag also features tear-resistant fabric. Thanks to the high-frequency seams on both sides, the rear panniers are so stable that not even a needle can penetrate the seams. Remember to protect your bike bags and delicate items from obstacles such as roots and rocks when going off-road and engaging in adventurous activities. [Front & Rear Classic]-- The attachment system is very intuitive and allows you to securely attach the bike saddlebags to the frame. The fixed triangle hooks are also compatible with most luggage racks (MAX16mm). And the Velcro can be cut to fit the actual thickness of the luggage rack at will. The bicycle bag is perfect for loading front or rear wheel carriers. [2 in 1-Better for Outdoor]-- The 28cmx15cmx38cm, with a capacity of 15L and a roll top for up to 18L. You can also carry the bag over your shoulder or on the back of your bike. Four colors to choose from to meet your outdoor cycling needs for commuting, outdoor touring and more. [Excellent Waterproof & Reflective Logo]-- The electric bike pannier set can withstand heavy rain and splashing water thanks to seamless fusion technology and roll-top closure. Even when the bag is filled with water, not a single drop will leak out, protecting your belongings from moisture. In addition, the front and sides of the bag are designed with a reflective design, keep you safe in the dark.