Innovative Design】3D shell bike seat bag with wave cushion provides inside shock resistant protection if fell out.【High Quality & Durable】Our under seat bike bag is made of waterproof fabric with taped zipper , sturdy, stylish and in good shape. It has high tear resistance and prevents damage from friction, which guarantees that the saddle bag will last for a really long time.【Large Capacity& Inner Compartments Design】This convenient bike storage bag is a mini bike bag though, it has enough storage to meets the request of daily cycling. Inner with auxiliary mesh pockets structured inside can hold cashes ,keys and other small repair tools.【Dual Safe Protection】This bike pack is designed with reflective light stripes around the bag and reflective logos on both sides, which increase visibility at night and makes your night riding safer. The extra taillight tape at the rear of the bag can be used to hang the bike tail light.(PS. Taillight doesn't include in the package.)【Fix Securely】This bicycle under seat pack design with 2 fixing belt and an adjustable velcro straps.It is easy to install,just need to put the two belt under seat bow and hold to right place,fixed the velcro to tube tightly. Which keeps bag securely attach to seat post,no worry about the bag fallen while riding.