25L Stretchable Large Capacity Easy Installation Multipurpose Bike Saddle Bag Fit For Cycle Journey or Daily Commuting Lightweight But Durable: ‎1.52 pounds light weight and wear-resistant reduce your load so that you could enjoy your cycling trip. Side Storage For Water Bottles: You can easily put in and take out water bottles while riding. Tail light straps: The outside of the water bottle bag has straps to attach tail lights, it ensure that you can be seen at night. Rainproof Cover: The included rain cover prevents the bag from getting wet on rainy days. Extensible Large Capacity It is a good choice for short cycling journey or daily commuting, you can put daily necessities, bicycle accessories, sports goods in the bicycle bag. Two side pockets can be unzipped and turned into panniers for bicycles, from 10L to 25L as you wish. Reflective Strap Reflective tape is around the bike bag to improve visibility at night. Elastic Rope The elastic cord on the top can securely holds soiled items such as repair tools, umbrellas, towels, etc. Rainproof Cover Rainproof cover ensure bicycle panniers could be used in rainy and snowy days. Multi-Application In addition to being pannier bags for bicycles rear rack, it can also be used as a handbag and shoulder bag by using the included straps. Different usages allow the bike bag can be used in different scenarios. It can also be used as a gym bag, daily commuter bag, camping bag, travel bag, etc. Easy Installation Without Tools This bike panniers is easy to be installed, with 2 underneath velcro straps firmly holding your bike rear rack.It works on all bikes with a rear rack! Upgrade Straps The problem that the strap is not long enough has been optimized, and it can be suitable for larger size frames. Customers who think it is too long can cut off the excess part by themselves. Product Details Material: Dacron FabricCapacity: 10-25L(Extendable)Net Weight: 0.68kgDimension: 12.6*7.9*7.5 inchesColor: Black Product Content Bicycle rear rack bag *1 Adjustable shoulder strap *1 Waterproof cover *1