Description search terms: ROSWHEEL bicycle bag, rainproof, water bottle bag, bicycle rear seat bag, with tail light, cycling accessories Features: Made of carbon fiber fabric, durable and easy to wipe. Designed to hold water bottles and fit a variety of bikes. Buckle design to prevent bottles from falling. Equipped with waterproof LED taillight, making your night riding safer. IP44 degree waterproof, not afraid of rainy days. With reflective markings, visible in the dark and in the coming light. Description: Comes with straps and buckles for easy installation and removal. No installation tools required. Waterproof zipper style keeps items stable. The perfect gift for your friends who love cycling. Specifications: Material: Carbon Fiber Fabric Size: 240x95x90mm Color: Black Dark Blue, Black Cyan Packing List: 1 x Bicycle Tail Bag with Tail Light Note: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style will be the same as shown in the pictures. 2. Due to manual measurement and different measurement methods, please allow 1 3cm deviation. Thanks