Feature: 1. Large Capacity: 40L(50*30*32cm/19.7*11.8*12.6inch) / 66L(60*37*39cm/23.6*14.6*15.4inch), two sizes for your choices, fits everything from clothes & swimsuits & snacks to phones, laptops & cameras. Enough room for your sports gears and traveling necessities. 2. Practical Card Holder: Never lose your important cards again with the transparent card holder. Easily store your ID or other cards for quick access and identification, keeping your essentials organized and secure while on the go. 3. Night Reflective Design: Stay safe during night journeys with the night reflective design of this rear seat bag. Ensure better visibility in low-light conditions, providing added safety and peace of mind for all your outdoor activities, from sailing and fishing to camping and travel adventures. 4. Versatile Carrying Options: Transform this rear seat bag into a crossbody bag, travel handbag, or backpack with ease.Whether you prefer to sling it over your shoulder, grab the handle and go, or separate the handle straps for a backpack style, this bag offers versatility and style for any adventure. 5. How to Work: Simply fold down the waterproof duffel bag, buckle up, and you're ready to go!The air release valve makes it easy to discharge air and reduce volume, ensuring your belongings stay dry and secure during outdoor activities. Specification: Item Name: Motorcycle Dry Bag Main Material: PVC Capacity: 40L/ 66L Product Color: Yellow/ Army Green/ Black Product Size: 50*30*32cm/19.7*11.8*12.6inch 60*37*39cm/23.6*14.6*15.4inch Package List: 1 * Duffle Bag4 * Quick Release Strap