Between a van and a Class C
A Class B+ is a little wider and taller than a camper van, usually on a van chassis with a fiberglass body. That extra room often means a dedicated bed, a real bathroom and more storage, while it still drives and parks more easily than a full Class C.
Who it suits
Couples or small families who want more comfort than a camper van without driving something large. If you need many beds, look at a Class C.