**CoolChange 27L Waterproof Bike Panniers – Large Capacity Bicycle Rack Trunk Bag for Commuting, Touring & Outdoor Adventures** *(优化说明：保留核心关键词，突出容量和防水特性，增加使用场景如通勤、旅行和户外活动，符合SEO规范并翻译为英文。)*

BLUEDORADO BIKE PANNIER BAG IS A GOOD PARTNER FOR CYCLING ENTHUSIAST！ Do you have problems with bringing your personal belongings, such as keys, mobile phones while cycling? Are you worried that these things get wet when it rains? CHOOSE OUR WATERPROOF Bicycle Rear Seat Bag NOW! LARGE CAPACITY This panniers bag are spacious enough to hold all of your cycling necessities like shoes, thin clothes, raincoat, camera, power bank, bike lock, bike pump, sunglasses, bike repairing tools, etc MUTILPURPOSE BAG Perfect for bike touring, camping, hiking, hunting, fishing, road tripping, picnics in the park, boating, pool parties, beach excursions, open air festivals, field trips, BBQ gatherings, and other indoor and outdoor occasions. It can also be used as a grocery bag, or a bike bag for everyday commute. ROLL-TOP OPENING Adopted Roll-Top closing way, it could provide ideal waterproof performance. Roll the opening 3/4 times and fix it with the webbing strap to keep all your gears dry. Enjoy riding freely with the waterproof bike bag on an unexpectedly rainy day! HIGH FREQUENCY WELDING TECHNOLOGY The glue-pressed waterproof zipper can isolate rainwater and stains from entering.Padded with strong PE board in the back of this bicycle rear bag to protect your items perfectly and keep shape. Reflective logos on 3 sides of this bicycle pannier bag to increase your visibility in low light or dark conditions. PERFECT GIFT Not only can be used as bike rack panniers, but also a stylish commuter bag with a shoulder-strap(shoulder-strap included). Thanksgiving ,Christmas or Birthday gift for your lover, families or friends Our products are professional, functional and stylish; We aim to help outdoor lovers better enjoy the fun of sports; We hope you can enjoy the cycling with no trouble!

LARGE CAPACITY - 27 L capacity each bag can holds your change of clothes or some essentials for the cycling trip. There are classified storage pockets inside the shelf bag for easy placement of small items. Size: 7.1 (width) * 8.3 (Top length) * 18.1 (height) * 13.4 (Bottom length) in.

FULLY WATERPROOF - Our bike pannier bags made with High density 840D Nylon and covered with TPU film which ensure you can use this bag freely on rainy day or wet weather without worrying about your items getting wet inside the bag or scratched. The bag's surface is easy to clean and can be wiped clean with a wet cloth in seconds without fear of muddy roads.

HIGHLIGHT REFLECTIVE STRIP & TOP STRAPS DESIGN - Highlight LOGO reflective stickers, which make you ride safely at night. The top of the bag is specially designed with straps to place clothing, towels and others in the dry during riding,

EASY TO CLEAN - Comprehensive waterproof material, you only need to rinse sticky,mud and stains with water

EASY TO INSTALL - With back two movable and solid buckles and 360° rotatable bracket, the bike panniers can be adjusted and fixed at the appropriate position on the rear rack of bicycles, which prevents the bike bags popping out. Easy and quick to hook, no extra tools needed.