DURABLE MATERIAL & SOLID SHAPE: Our bike saddle bag made of PU fabric and diamond grid scratch-resistant rubber material which is more durable, Effective prevent it from being worn out , while your bike seat bag is scratched by branches, or when your bike falls down and crash against the ground; What's more, add PP plate support on two side of the bike bag makes it more solid,protect internal items from being squeezed 1.0L LARGE CAPACITY: Ideal capacity for 1.0L and dimension is 16.5*9.6*8.4cm(6.5*3.8*3.3inch) this bike under seat bag can meet your daily need and prefect for mini pump, wallet , folding lock small cycling accessories, tire repair kit or multi-tools etc; Moreover, there extent classified storage design on the bag cover for small keys, cards, money and mesh pocket design can contains something wet REFLECTIVE DESIGN: Reflective strap on two side of the seat bag to increase night visibility while night cycling, Taillight hook compact space on the seat post ( Tips:Taillight doesn't include in the package ) , Let's riding safer at night EASY TO INSTALL: Only need two steps to install successfully, 2 install straps simplify mount system, one strap around two side is for fastening the bike seat, which can also be adjustable, and the strap on the rear is use for fix the bike tube. More importantly, it will not touch you legs anymore while cycling LIFETIME WARRANTY: Our friendly customer service: any questions during using pls feel free to contact us, this cycling storage bag is also a great gift (Thanksgiving ,Christmas or Birthday gift) for your lover, families or friends. No any risk to try, pls trust us and just buy it