Review on Blue Motorcycle Seat Tail Bag Backpack - Waterproof Dual Luggage Bag for Motorbike Saddle Bags - Versatile Multifunctional Bags by Steve Stone

Great bag with plenty of room, plus it expands a bit if you need extra height. The assembly is good, nothing is torn and does not fall off. The straps to attach the bag to the bike are good and can be adjusted if needed. I wish the bag had a small strap but you could clip it on. It has a carrying handle. The water resistance is good as long as you don't stand in continuous rain for hours. If so, then I would spend the extra money on a real waterproof bag.