It's like the one pictured in your post. Mine is an older model made by LL Bean I've had for over 15 years, and I usually use it as a brief case when I use it. But it came with straps to go around your waist to keep it in place, and these allowed me to keep it located behind my back while riding and while stopped. There's enough room in there for my work clothes and lunch plus a few extras, this could replace the pannier when it's too hot to use a backpack.