Described by Simpson themselves:
Designed 100% with motorcycle riders in mind, the Simpson Ghost Bandit is prepared to handle just about any type of riding in killer style and complete comfort. The lightweight shell has been aerodynamically tuned for motorcycle riding, and is fully ventilated for maximum airflow when, and where, you need it most. Integrated speaker and microphone pockets make it easy to install your favorite communication device, and a drop-down sun visor makes riding through changing light conditions a breeze.
A hands on observation:
All of the Simpson Bandits are great durable helmets however the Ghost Bandit is particularly special. Besides the amazing and obvious things, such as the drop down sun visor and more air ventilation, it has other perks. This helmet is truly the upgraded version of the other 2 (Street Bandit and Outlaw).
The locking mechanism is different on the shield for both comfort and durability. The lifting "up and out" type of shield that the other Simpson Helmets have after some wear eventually become loose because of the way it is opened. This helmet will not have that problem with a flip up and down lock. Simply push the lock button up or down and the shield does what you want it to.
There is a chin guard on this helmet as well to prevent air from entering while riding at higher speeds which is also a pleasant little upgrade. The padding on the lower end of the helmet is made to fit your face like a glove to prevent rattling at high speeds.
Just some food for thought while deciding on which Simpson helmet to purchase !