IDEAL CAPACITY: 0.73 liter capacity, perfect for holding daily essentials. Bike Bag under seat is roomy for gas cylinder, tube, tools and miscellanea, small wallet and/or keys. If there need a little extra space it has an expansion zipper which will add a decent amount of space.
STRAP-ON DESIGN: Upgraded stylish design bike saddle bag. Concise style, better material, perfect size. Fixed securely with 2 strap, the straps fit securely and neatly under your saddle and around the seat post which suits for the most road, mountain and commute bikes.
WATER RESISTANT: The bike saddle bag is made of black carbon textured fabric and is water resistant, durable and lightweight. Mud and sewage can be cleaned by wiping easily. Waterproof Anti-slip zipper ensures no leaking.ROCK BROS bike saddle bag is the best for your bike.
REFLECTIVE DESIGN: The both sides of this water resistant saddle bag have reflective logos to increase night visibility in low light or dark conditions. It has a loop on the back which allows you to clip on a bike light. ( Tips:Taillight doesn't include in the package )
EASY ATTACH ON & REMOVE: This pack is the perfect size, aero and has two strap that wrap around your aero seat post. And it can hugs the seat very tightly up an out out the way. It is easier to take the bag off of the bike and then re-attach it when needed.