- WEATHERPROOF DESIGN: Constructed with tear-sealed pressure layers and a hard shell exterior, this bike trunk bag ensures your belongings stay dry and protected in various weather conditions. - ENHANCED WATER RESISTANCE: The upgraded carbon-powered exterior provides superior waterproof capabilities, effectively repelling water and keeping your items safe from the elements. - SECURE ATTACHMENT: Equipped with three extended hook and fastener straps, this bike trunk bag attaches securely to your bike's rear seat. It guarantees stability, preventing any loosening or falling during your rides. - SPACIOUS INTERIOR: The bag features a roomy interior, designed to accommodate a range of everyday items, from tools and spare tubes to snacks and personal belongings, making it ideal for commuting or weekend adventures. Use Scenarios: 1. Commute to work: Carry your laptop, lunch, and essentials with confidence, knowing they are shielded from rain and road vibrations. 2. Weekend rides: Pack your cycling gear, hydration supplies, and snacks for a day out on the trails, all securely stored in one place. 3. Errands around town: Transport groceries, small packages, or personal items conveniently while cycling, without the worry of them getting wet or falling off. This bike trunk bag combines functionality, compatibility, and durability, making it an essential accessory for any cyclist seeking reliable storage on the go.