[High-quality waterproof and tear-resistant fabric]The bicycle trunk bag is made of Polymer cloth +PVC+TPU. The laminated waterproof zipper design is not only tear-resistant and wear-resistant, also prevents water splashing, , dust, etc. from entering the bag. Exquisite workmanship, durable and . The for commuting, cycling, outdoor, travel, hiking. MULTIPLE FUNCTIONS: With carrying handle and adjustable shoulder strap, the bag can be used as a and shoulder bag as . EASY INSTALLATION: Fastener strap for easy and quick installation on all types of bicycles with a rear , such as mountain bike, road bike, etc. [13-25L capacity storage space]The main compartment is partitioned for storage,The capacity of 25L is enough to your phone,wallet,books,water bottles,tools,food and other daily necessities. High Wear-resistant and durability. color:Yellow : Polymer waterproof cloth+PVC+TPU Package Contents: 1 x bike bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.