In Time Trial, Triathlon and Track bikes, full disc wheel, 5-spoke and 3-spoke carbon wheels are widely used.

Compared to regular wheels, carbon spoke and full disc wheels are relatively heavier, but they are outstanding in aerodynamics and stiffness which are critical for TT/Track bikes.

With PMI filled inside for this UFO disc wheel, it not only contributes impact resistance, but also stiffness to this disc wheel. In the meantime, it helps to reduce possible noise while riding as well compared to hollow disc wheel.
The valve hole is on the non-drive side and equipped with a carbon cover which is fixed by velcro inside. It keeps the valve clean and of better looking. The most important benefit is to reduce wind resistance and noise.
28mm outer width is an absolute and perfect choice to follow latest popular tendency in the carbon bike market. 22mm inner 28mm outer width, optimized aerodynamics for 700x28C tires.
With innovative asymmetric design, slightly bulge wheel body on non-drive side and slightly sunken on drive side. This difference would not be greatly obvious from the wheel side view, but greatly helps to balance the whole bike after assembling and reach better aerodynamics while riding.   

Hub options: