Tancendes Bike Rear Bag thicker rack straps Lengthened Shoulder Strap waterproof Nylon Bicycle Seat Trunk Bag with Raincoat High quality waterproof nylon material durable and tough and an extra rainproof cover Big enough capacity for long riding trip Multiplane design help you store different gadgets and a special designed water bottle package Two built-in bags hidden in the side packages Preset a position for lock a rear flashlight