- Constructed from durable waterproof polyester, this bike rear seat bag is designed for long-lasting performance, ensuring your belongings stay dry in various weather conditions. The internal aluminum foil insulation helps maintain the temperature of your drinks and food, keeping them warm or cold as needed. - With a generous storage capacity, this bag accommodates essential items such as small tire repair tools, a taillight, gloves, tissues, phones, water bottles, and beverages—everything you need for a comfortable cycling experience. - Enhanced visibility is provided by reflective straps located on the sides, ensuring safety during nighttime rides. The integrated taillight hook on the back allows for easy attachment of your taillight, increasing your visibility to others on the road. - Featuring adjustable adhesive mounting straps, this bag allows for quick installation and removal without the need for additional tools, making it convenient for any cyclist. Use scenarios: 1. Perfect for daily commuters who need to carry tools and personal items securely while riding to work. 2. Ideal for weekend cyclists who want to pack snacks and drinks for long rides without compromising on storage space. 3. Suitable for family outings, where parents can store essentials for children while ensuring safety with the reflective design. This bike rear seat bag combines functionality, safety, and convenience, making it an essential accessory for any cyclist.