Roswheel 14154 Bike Bicycle Rear Rack Double Panniers Back Seat Cargo Trunk Made with 600D high density tear resistant polyester and padded with PE board, solid and durable Each side of the bag has a reflective logo and 3 reflective pipelines for increasing visibility in low light or dark Total 30 liters (8 gallons) volume, each large main compartment has about 15 liters (4 gallons) capacity, perfect for commuting, grocery and adventure Easy installation and quick release, fixed securely with 2 Velcro straps and 2 metal buckles, fit most of mountain, road and commute bike's rack SIZE: 14.5(L) x 5.5(W) x 14(H) inches (each side)