Kemimoto Bike Bag, Bicycle Panniers Rear Rack Bag, 30L Large Capacity, Grey. Compatibility - Please confirm your bike rack size before purchasing. Compatible: Support for Width Less Than 5 inches Bike Rack, Not suitable for most electric bikes and Not compatible with BMX bikes. Water Resistant - This cycling pannier bag is made of 600D Oxford fabric with waterproof PVC Layer. Effectively stay away from the humid climate even when caught in a sudden downpour. Large Capacity - Kemimoto bike bag has a capacity of 15L per bag, and the total capacity of 2 bags is UP to 30L. Includes 2 main compartments for each bag. Plus the 2 pockets on the outside, ideal storage for daily essentials, biking gear, cycling accessories. It will be a good companion on the journey. Double System Fasteners - There are 4 strong straps. The front and rear straps attached to rack perfectly. With extra 2 side hooks, you wouldn?t worry this bike rack bag bounce around while riding. Obtuse Angle Design - Obtuse angle design for two side bag ensures enough pedaling space. Wouldn't hitting heel while riding. Providing you with a comfortable riding experience.