It's a big bag and holds a lot. Semi rigid with a 4 point attachment system. The bottom straps attach to the rider handles and the top straps attach to my trunk rack. This allows the bag to tip forward when I open the trunk. Top handle or stowable straps allow for easy cary. Good price here too.

I used this on my trip to Nova Scotia. Phenomenal! It fit nicely behind my Markland backrest, and held 6 pair levi's, 8 t-shirts, 6 pair socks, 6 pair boxers, 2 sweaters, and 2 pair cold weather long johns. A lot of room! Left my side bag luggage free to hold dirty clothes, and my trunk rack bag to hold my rain gear. The side pockets held my cell phone and toilet kits. And it works great as a backrest if you don't already have one. Since then , I have modified a hitch mounted cooler rack to hold the t-bag.

This is a nice piece. Holds alot of stuff, secures very easily to the passenger grab bars and the trunk rack. Once loaded, is more comfortable than the Utopia backrest. One of my favorite buys.