From the Tamiya website:
In Pole-ar Position
This is a Mini 4WD racer assembly kit which creates the Shirokumakko GT, an exciting kit that uses the stylish Raikiri GT car-style body molded in clear blue. Shirokumakko is a cute character whose name derives from the Japanese word for "polar bear", and it comes pre-assembled and painted. Metallic stickers were designed just for this model, with an ice-cold color scheme. The midship motor MA chassis is molded in white, with A parts like the rollers and rear skid bar in light blue. Fluorescent orange 5-spoke wheels and blue low-profile tires round off the look. The kit includes a 3.5:1 gear and high-powered Torque-Tuned 2 Motor PRO.
The Ultra-Efficient MA Chassis
The MA (Midship AERO) Chassis has its motor in the center, and features a design which focuses upon achieving outstanding aerodynamic performance. It has six individual low-friction rollers, a rear skid bar and other speedy features developed thanks to years of design experience. The single-piece monocoque frame also guarantees that assembling and keeping the car well-maintained is a task that can be performed by beginners and veteran racers alike.
Separately Required Items: R6/AA/UM3 batteries (x2)