Large Capacity Bike Bag- 10L large capacity, allows you to store small tire repair tools, taillight, gloves, tissues, phones, power bank, water bottle. water, drinks and other essentials you need while cycling. With a mesh pocket inside, allows you to keep small things like keys or credit card. There is a pocket and a strap at the top of the bike rack bagHigh Quality Material- Made of waterproof polyester and seam-sealed waterproof zipper, which is durable and long lasting. Internal aluminum foil insulation design, helps keep drinks and food hot or cold.Safe Reflective Design- Designed with reflective straps on the side, makes it visible at night, this which is safer for your cycling. With a tail light hook on the back of the bike rack bag to hang the tail light (TAIL LIGHT NOT INCLUDED). The thoughtful design will accompany your night riding.Portable Bike Rack Bag- Comes with a carrying strap, you can carry the rear bike bag anywhere if you leave your bike. Side adjustable water bottle holder for easily removing the water bottle and preventing it from falling during a bumpy ride. Suitable for bicycle, e-bike and other commuter bikes, especially perfect for your short cycling trip.Easy to Install and Place- No tools needed. There are 2 magic straps, just put this rear rack bag on your bike's rear rack, adjust the strap to a suitable length and moderate tightness of your bike, prevent the rear rack bag from move.