Here's what the manufacturer says:
State of the art technology with a heritage of excellence built in Built with today's most advanced wheel technologies and the Hed tradition of building solid, dependable, aero wheels, cutting-edge features such as new light weight unidirectional carbon aero sections, C2 rims, and sonic hubs, The Jet 7 Express is the high-performance wheel at a great price.
Here's what we say:
HED wheels have a long standing pedigree. This is another beautiful wheelset that I'd be happy to hang on the wall when I'm not riding them - another example of where speed meets beauty. Smooth riding aero wheels will have you ride faster at the same level of effort. These wheels give you the gift of more speed and who doesn't want that? BTW, with this wheelset, tires are included: Michelin Power Comp Race.