Features: brand new and high quality Comfortable and Soft Material: The pannier is made of high-quality waterproof coating 600D Oxford cloth material and strong polyester cloth, and is equipped with a rain cover, double waterproof, so you don'for t have to worry about getting wet items even in rainy days; Thick, soft pad for things like a camera. Large Capacity Design: The main bag of the main body of the pack can store daily necessities, and the thickened body can for play a good shockproof effect; and it is equipped with a standard water bottle card slot. Both sides can be expanded, and the height can also be expanded to increase the internal volume. Expandable Design: Our bicycle bag can be expanded and increased in capacity. The normal size is 322618CM; after expansion, the unilateral dimension is approx.32255CM, and the expanded capacity can reach 27L is enough to equip your riding gear. Reflective Warning Effect: There are reflective strips on both sides and back of the bicycle tail bag, which can for play a very good warning effect on vehicles and pedestrians in the for case of low illumination. Make sure you ride safely at night. Wide Range of Use: Exquisite bicycle backpack, which can be placed on the car, or carried by hand or shoulder; widely used in disc brake mountain bikes, bicycles, and even road touring vehicles; suitable for short and medium-distance travel. Specifications: Material: 600D Oxford Cloth Color: Black/Red/Blue Package Weight: approx.690g Size: approx.34x26x18cm/13.38x10.23x7.08in (More Size Details, Please See Photo.) Note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1Pc x Bike Rear Rack Bag